Zach Yenser is in his first season as the 49ers assistant offensive line coach. He joined San Francisco after spending three of the previous four seasons (2015-17) as the run game coordinator/offensive line coach at the University of Kansas. Yenser spent the 2018 season as an offensive quality control coach at Southern Methodist University.
In 2017 at the University of Kansas, the Jayhawks averaged 102.6 rushing yards per game and finished with 11 touchdowns on the ground under Yenser's leadership. In 2016, his second season at KU, his unit paved the way for an average of 119.1 rushing yards per game and 11 touchdowns while RB Ke'aun Kinner rushed for 738 yards and three touchdowns on 140 carries (5.3 average). Kansas finished the 2015 season averaging 112.9 rushing yards per game and finished with 10 rushing touchdowns.