Daniel Bullocks is in his second season as the 49ers assistant defensive backs coach after spending the 2016 season in the same role with the Jacksonville Jaguars.
In 2017, working alongside defensive backs coach Jeff Hafley, the 49ers secondary continued to improve throughout the season. Rookie CB Ahkello Witherspoon started the final nine games and finishing the season with 32 tackles and he tied for the team-high in both interceptions (two) and passes defensed (seven). Rookie DB Adrian Colbert started each of the last six games he played and finished with 32 tackles, two forced fumbles, one fumble recovery and five passes defensed. In his first season with San Francisco, CB K’Waun Williams set a career-high with 54 tackles while adding his first career interception, two forced fumbles, one fumble recovery and five passes defensed.