MIKE MAYOCK'S TOP FIVE
6-5, 319, Iowa
Scherff is Mayock's top interior offensive lineman but several others rate him as the top offensive tackle. A standout left tackle at Iowa, Scherff started 26 games in the last two seasons at that position, although some evaluators maintain he's a more natural fit inside. Received the Outland Trophy in 2014, given to nation's top offensive lineman. Dominates opponents with tremendous power and could be the first offensive lineman drafted.
6-5, 313, Florida State
Like Scherff, Erving is also considered by some to be a tackle prospect. After beginning his career at defensive tackle, Erving switched to the offensive side of the ball and impressed at left tackle in 2012 and 2013. He moved to center midway through the 2014 season and flourished. Erving boasts exceptional versatility and athleticism, two traits that could help him become a first-round pick.
6-3, 323, Duke
Tomlinson started 52 consecutive games for the Blue Devils at right guard and was named a first-team All-American in 2014. Has the size and strength to create space in the run game. Projected to be a second-round pick.
6-3, 313, South Carolina
A four-year starter at left guard for the Gamecocks and a two-time captain, Cann is considered by most to be a ready-made NFL guard. Viewed as a second-round pick.
6-4, 330, Florida State
The largest of the linemen listed, Jackson is a mauler who made 42 starts at right guard for the Seminoles. Earned All-America honors in 2014 and was named South Team Most Valuable Player at the Senior Bowl. Projected to be a second or third-round pick.
6-4, 307, Hobart
Marpet was the fastest offensive lineman at the Scouting Combine, running a 4.89 40-yard dash. He also posted the top 3-cone time among interior lineman (7.33). Division III prospect who played left tackle in college could be a second or third-round selection.