Aaron Whitecotton

Assistant Defensive Line

Experience: 8 years


Aaron Whitecotton is in his first season as the 49ers assistant defensive line coach. He joined San Francisco after spending the previous three seasons with the Buffalo Bills as the team's assistant defensive line coach (2018-19) and administrative assistant to the head coach (2017).

The 2019 Bills defense finished the season ranked third in the NFL, allowing 298.3 total yards per game. Buffalo's defensive line saw multiple players register career highs in sacks on the season, with DT Jordan Phillips leading the team with a career-high 9.5 sacks, DE Shaq Lawson racking up 6.5 sacks and rookie DT Ed Oliver finishing the season with 5.0 sacks of his own, making the Pro Football Writers Association All-Rookie team.