Chart: Building the Vikings line

Matt Kalil, left tackle (6-7, 317 pounds): First-round draft pick (fourth overall) in 2012 out of Southern California. He has started every game since and made the Pro Bowl as a rookie.

Brandon Fusco, left guard (6-4, 306): Sixth-round pick in 2011 from Slippery Rock. A starter beginning in his second season, he moved from right guard to left guard this year.

Joe Berger, center (6-5, 305): In his 11th NFL season and fifth with the Vikings. Took over at center when John Sullivan injured his back. Drafted in the sixth round in 2005 out of Michigan Tech by Carolina.

Mike Harris, right guard (6-5, 338): Undrafted out of UCLA, he signed with San Diego in 2012 and was claimed on waivers by the Vikings in 2014. Started the final five games last season at right tackle.

T.J. Clemmings, rght tackle (6-5, 310): Fourth-round pick out of Pittsburgh this year, he has started every game after Loadholt was lost for the season following Achilles' surgery.

Backups: Austin Shepherd, rookie seventh-round pick from Alabama; Zack Kerin, signed as undrafted free agent out of Toledo last year; Nick Easton, undrafted free agent from Harvard acquired from San Francisco last month; Jeremiah Sirles, traded from San Diego, was undrafted out of Nebraska in 2014. Injured reserve: Carter Bykowski, T; Phil Loadholt, T; John Sullivan, C.