CHARLOTTE — Oh by the way, there's a game this week. Kind of a big one for the Panthers, too.
Perhaps lost in the news of the return of a certain quarterback to his original team, the particulars of this matchup against the 8-1 Cardinals haven't gotten as much attention as it would have otherwise.
Don't worry, we're here to catch you up, because there's a lot going on.
Here are five things to keep an eye on in Sunday's game, other than a quarterback who isn't going to start, since P.J. Walker will be under center to begin the game.
DEFENSE ON ITS TOES
Linebacker Shaq Thompson was brought to the media room this week, ostensibly to talk about his past with quarterback Cam Newton, since that was a topic of great interest this week.
Thompson was trying to be nice about it, but had a message that was clear. When asked if signing Newton sent the same kind of win-now message as the October trade for cornerback Stephon Gilmore, he steered his answer straight back to the present.
"I'm not going to lie to you, I'm just focused in on this game," Thompson said. "Being 1-0 this week, going out there to play one of the best teams in the NFL right now. Going against one of the most explosive offenses. Quarterback Kyler Murray's having a hell of a year. That's my focus right now.
"We love having Stephon, he's balling out for us right now. The defense is built to win right now, I can say that. But this team is definitely going to be built to win too. We're just going out there and take care of business. We're rocking with P.J. this week, and P.J. is going to go out there and have a hell of a game."
The Panthers defense playing at a high level is one of the reasons Newton is back — you don't want to waste the efforts of a unit that's ranked second in the NFL.
But they also know that Newton just walked in the door, so his ability to impact things is limited. That means they have to be locked in on continuing to play the kind of smothering defense they have been.
GUESSING GAME
The Panthers have prepared for a Cardinals offense that has plenty of weapons, but it's unclear if they're going to be there Sunday.
It starts with quarterback Kyler Murray, who has been described as a game-time decision for the second week in a row. Last week, they decided to let him rest a sore ankle, and veteran backup Colt McCoy led them to an impressive 31-17 win over the 49ers. Murray practiced Friday for the first time after missing five straight sessions.
The Cardinals are also unsure about the status of star wide receiver DeAndre Hopkins, who has a hamstring injury. Wide receiver A.J. Green is back from the COVID-19 list, and the Cardinals have plenty of weapons on offense.
HOT STREAK
The Panthers have won five straight against the Cardinals, including last year's surprising win in Charlotte.
They're 11-4 all-time in the regular season against Arizona, their best winning percentage against any NFC team, and 5-2 at Arizona.
The Cardinals haven't beaten the Panthers since the 2013 regular season, and they also won in the 2011 opener, when Newton made his pro debut, and threw for 422 yards, with two touchdown passes to Steve Smith and also ran for a touchdown.
STRENGTH VS. STRENGTH
The Panthers aren't the only team playing great defense, as they face another top-10 unit for the second week in a row.
The Cardinals are fourth in the league in total defense and third in points allowed, and they're getting safety Budda Baker back on the field.
While Christian McCaffrey's return to the field last week should help, this is still a considerable challenge for Walker in his second NFL start. After last week's injuries to left tackle Cameron Erving and center Matt Paradis that landed them on IR, the Panthers will be starting their seventh different combination of offensive linemen in 10 games this year.
The Cardinals don't need the help. They have allowed fewer than 20 points and 350 total yards in five of their nine games this season, tied for the most in the NFL.
SACK MATCHUP
The Cardinals were willing to let Haason Reddick leave in free agency last year because they had a replacement on hand. And now they're both among the league leaders.
The Cardinals traded for Marcus Golden after last year's injury to Chandler Jones, and re-signed him this offseason.
Now, Golden is tied for third in the league with 9.0 sacks, with four forced fumbles.
Reddick has made his presence felt quickly in Carolina, with 8.5 sacks, which is sixth in the league. He's also tied for the league lead with 12 tackles for loss.
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Carolina is 14-5 all-time against the Cardinals, including a 2-1 record in the playoffs.
Arizona Cardinals quarterback Kurt Warner (13) tries the thorw a pass as Carolina Panthers' Charles Johnson (95) defends during the second quarter of the Panthers' 27-23 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. Warner thres for 381 yards and two touchdowns. (AP Photo/Rick Havner)
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers quarterback Jake Delhomme looks to pass against the Arizona Cardinals during the second quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. (AP Photo/Matt York)
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals during the Wild Card playoff round at Bank of America Stadium on Saturday, January 3, 2015, in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers' Mushin Muhammad, center, jumps into the stands after his 17-yard touchdown catch in the fourth quarter of the Panthers' 35-10 win over the Arizona Cardinals in Charlotte, N.C., Sunday Nov. 21, 2004. (AP Photo/Rusty Burroughs)
ADVANCE FOR WEEKEND EDITIONS, SEPT. 17-18 - FILE - This Sept. 11, 2011 file photo shows Carolina Panthers quarterback Cam Newton (1) leaping over teammate Travelle Wharton (70) as Arizona Cardinals' Joey Porter (55) and Paris Lenon (51), pursue during the second half of an NFL football game, in Glendale, Ariz. (AP Photo/Matt York, File)
Carolina Panthers linebacker Thomas Davis (58), defensive tackle Kawann Short (99) and linebacker Luke Kuechly (59) team up to stop Arizona Cardinals running back Rashard Mendenhall (28) during an NFL game on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Carolina Panthers quarterback Cam Newton (1) sets up to pass during an NFL game against the Arizona Cardinals on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers play against the Arizona Cardinals at Bank fo America Stadium on Sunday, October 30, 2016 in Charlotte, NC.
Arizona Cardinals wide receiver Andre Roberts (12) is tackled by Carolina Panthers defensive back Charles Godfrey (30) during the first half of an NFL football game, Sunday, Sept. 11, 2011, in Glendale, Ariz. (AP Photo/Ralph Freso)
Carolina Panthers quarterback Cam Newton (1) leaps into the end zone for a touchdown against the Arizona Cardinals during the second quarter of an NFL football game on Sunday, Sept. 11, 2011, in Glendale, Ariz. (AP Photo/Ralph Freso)
Carolina Panthers wide receiver Steve Smith (89) hauls in a pass as Arizona Cardinals defensive back Kerry Rhodes defends during the second half of an NFL football game on Sunday, Sept. 11, 2011, in Glendale, Ariz. The Cardinals won 28-21. (AP Photo/Paul Connors)
Carolina Panthers wide receiver Steve Smith (89) runs upfield with a reception an NFL game against the Arizona Cardinals on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers' Marcus Hudson (25) celebrates a paly with teamate Jon Beason (52) in the second half of the Panthers' 19-12 win over the Arizona Cardinals in an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)
Carolina Panthers Steve Smith celebrates after his touchdown pass from quarterback Cam Newton against the Arizona Cardinals during the first half of an NFL football game on Sunday, Sept. 11, 2011, in Glendale, Ariz. (AP Photo/Ralph Freso)
Carolina Panthers' Mike Goodson (33) runs past Arizona Cardinals' Adrian Wilson (24) in the second half of the Panthers' 19-12 win in an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)
Carolina Panthers' Brandon LaFell (11) runs after a catch as Arizona Cardinals' Bryan Robinson (97) pursues in the first half of an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)
Carolina Panthers Steve Smith makes a reception from quarterback Cam Newton against the Arizona Cardinals during the first half of an NFL football game, Sunday, Sept. 11, 2011, in Glendale, Ariz. It was Newton's first career touchdown pass. (AP Photo/Ralph Freso)
Carolina Panthers' Jimmy Clausen (2) looks to pass against the Arizona Cardinals in the first half of the Panthers' 19-12 win in an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)
Carolina Panthers' DeAngelo Williams (34) looks for running room as Arizona Cardinals' Adrian Wilson (24) moves in while Panther's Matt Moore (3) looks on during the second half of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Julius Peppers, right, chases down Arizona Cardinals' Kurt Warner (13) during the second half of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Thomas Davis (58) celebrates after intercepting a pass against the Arizona Cardinals during the first half of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Jake Delhomme (17) tries to get past Arizona Cardinals' Gerald Hayes (54) during the first half of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Jeff King (47) gets tackled by Arizona Cardinals' Karlos Dansby, left, and Clark Haggans (53) during first half action in an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Julius Peppers (90) celebrates with teammates after returning an intercepted pass for a touchdown against the Arizona Cardinals during the first half of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
CHARLOTTE, NC - JANUARY 10: Tim Hightower #34 of the Arizona Cardinals is tackled by Jon Beason #52 of the Carolina Panthers in the NFC Divisional Playoff Game at Bank of America Stadium on January 10, 2009 in Charlotte, North Carolina. The Cardinals defeated the Panthers 33-13. (AP Photo/Tom Hauck)
Carolina Panthers' Julius Peppers (90) returns an interception for a touchdown in the second quarter of an NFL football game against the Arizona Cardinals, Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
Carolina Panthers' Steve Smith (89), Chris Gamble, left, and Richard Marshall (31) walks with their teammates onto the field during team warmups prior to an NFL football game against the Arizona Cardinals Sunday, Nov. 1, 2009, in Glendale, Ariz. The Panthers defeated the Cardinals 34-21. (AP Photo/Ross D. Franklin)
CHARLOTTE, NC - JANUARY 10: Steve Smith #89 of the Carolina Panthers ACTION against the Arizona Cardinals in the NFC Divisional Playoff Game at Bank of America Stadium on January 10, 2009 in Charlotte, North Carolina. The Cardinals defeated the Panthers 33-13. (AP Photo/Tom Hauck)
Carolina Panthers' Jonathan Stewart, right, runs in for a touchdown as teammate Jake Delhomme (17) celebrates and Arizona Cardinals' Antrel Rolle (21) comes in late to defend in the second quarter of an NFL football game Sunday, Nov. 1, 2009, in Glendale, Ariz. (AP Photo/Ross D. Franklin)
CHARLOTTE, NC - JANUARY 10: Jake Delhomme #17 of the Carolina Panthers passes against the Arizona Cardinals in the NFC Divisional Playoff Game at Bank of America Stadium on January 10, 2009 in Charlotte, North Carolina. The Cardinals defeated the Panthers 33-13. (AP Photo/Tom Hauck)
Carolina Panthers' Jon Beason (52) runs with the ball after making an interception during the Panthers' 27-23 win over the Arizona Cardinals in an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. Beason became a clear team leader this season and was voted to his first Pro Bowl. Now the middle linebacker prepares for his first playoff game with plenty of pressure as the Panthers face high-scoring Arizona. (AP Photo/Chuck Burton)
Carolina Panthers' Muhsin Muhammad (87) celebrates his 28-yard touchdown catch over Arizona Cardinals' Renaldo Hill (21) during the second quarter in Charlotte, N.C., Sunday, Nov. 21, 2004. (AP Photo/Rick Havner)
Arizona Cardinals running back J.J. Arrington (28) gets tackled by Carolina Panthers cornerback Richard Marshall (31) in an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. (AP Photo/Chuck Burton)
Carolina Panthers quarterback Jake Delhomme (17) throws a pass against the Arizona Cardinals an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. (AP Photo/Chuck Burton)
Carolina Panthers running back DeAngelo Williams (34) runs with the ball during an NFL football game against the Arizona Cardinals on Sunday, Oct. 26, 2008 in Charlotte, N.C. The Panthers won 27-23. (AP Photo/Rick Havner)
Carolina Panthers' Steve Smith (89) reacts during an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. (AP Photo/Chuck Burton)
Carolina Panthers' Steve Smith (89) races down the sidelines for a touchdown as Arizona Cardinals' Clark Haggans (53) chases during the third quarter of the Panthers' 27-23 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. Smith broke two tackles, tiptoed down the sideline and dove into the end zone. (AP Photo/Chuck Burton)
Carolina Panthers linebacker Luke Kuechly (59), defensive tackles Kawann Short (99) and Sione Fua (94) and defensive end Mario Addison (97) sack Arizona Cardinals quarterback Carson Palmer (3) during an NFL game on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers' Chris Gamble, right, knocks the ball away from Arizona Cardinals' Larry Fitzgerald (11) during an NFL football game on Sunday, Oct. 26, 2008 in Charlotte, N.C. (AP Photo/Rick Havner)
Arizona Cardinals' Larry Fitzgerald (11) is tackled by Carolina Panthers' Jon Beason, left, and Charles Godfrey (30) during the third quarter of the Panthers' 27-23 win in an NFL football game in Charlotte, N.C., Sunday, Oct. 26, 2008. Fitzgerald had seven catches for 115 yards. (AP Photo/Chuck Burton)
Arizona Cardinals' Larry Fitzgerald, front, is pulled down by Carolina Panthers' Michael Rucker during the second quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. (AP Photo/Matt York)
Carolina Panthers wide receiver Ted Ginn Jr. (19) runs upfield during an NFL game against the Arizona Cardinals on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers' Julius Peppers, right, stops Arizona Cardinals' Marcel Shipp for a short gain during the first quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. (AP Photo/Matt York)
Carolina Panthers' Steve Smith, in air, is pushed out of bounds at the 4-yard line as Arizona Cardinals David Macklin (27) helps defend during the fourth quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. The Panthers won 24-20. (AP Photo/Paul Connors)
Carolina Panthers running back DeShaun Foster (20) heads upfield during an NFL game against the Arizona Cardinals. The Panthers defeated the Cardinals 20-17 at Sun Devil Stadium in Tempe, Arizona on December 14, 2003. (AP Photo/Kevin Terrell)
Carolina Panthers' Steve Smith, rear, catches the game-winning touchdown pass as Arizona Cardinals Quentin Harris (29) defends during the fourth quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. The Panthers won 24-20. (AP Photo/Roy Dabner)
Carolina Panthers' Steve Smith (89) reaches for a pass as Arizona Cardinals' Dominique Rodgers-Cromartie (29) defends in the second half of the Panthers' 19-12 win in an NFL football game in Charlotte, N.C., Sunday, Dec. 19, 2010. (AP Photo/Chuck Burton)
Carolina Panthers linebacker Luke Kuechly (59) returns an interception during an NFL game against the Arizona Cardinals on October 6, 2013. The Cardinals defeated the Panthers 22-6. (AP Photo/Kevin Terrell)
Carolina Panthers' Ken Lucas, right, breaks up a pass intended for Arizona Cardinals' Larry Fitzgerald during the fourth quarter Sunday, Oct. 9, 2005, at Sun Devil Stadium in Tempe, Ariz. The Panthers won 24-20. (AP Photo/Paul Connors)
Carolina Panthers' Nick Goings (37) runs into the end zone past Arizona Cardinals' David Macklin (27) for a 2-yard touchdown in the second quarter in Charlotte, N.C., Sunday, Nov. 21, 2004. Panthers' Brad Hoover (45) blocks Macklin. (AP Photo/Chuck Burton)
