34. Travis Frederick, C, Cowboys
Remember when Dallas took Frederick with the 31st overall pick in the 2013 draft and everybody thought it was ridiculous? Nobody's laughing now. Frederick has become the most reliable and technically sound center in the NFL, and the epicenter of the league's finest offensive line. In 1,027 snaps last season, per Football Outsiders' charting database, he amassed just six blown blocks, allowed one sack, and just two hurries. Frederick has always been a mauler in the zone run game, but it's his development as a pass protector that makes him the best center in the NFL.