1. Kelechi Osemele, Raiders
At 6-5, 333 pounds, Osemele can dominate at guard or tackle, but it is at guard where he has become arguably the best offensive lineman in the league. Osemele is as dominant a run blocker as there is in the game today, and he also excels in pass protection, as evidenced by the Raiders allowing the fewest sacks in the NFL in 2016. He had a huge breakout season for the Baltimore Ravens in '15, when he was one of the best blockers in the NFL, and parlayed it into a $58.5-million free-agent deal in Oakland two years ago. The Raiders took a step back up front last season, but it was hardly the fault of Osemele, a two-time Pro Bowler, first-team All Pro in ’16 and Super Bowl XLVII champion.