The San Francisco 49ers announced they have signed CB Ahkello Witherspoon to a four-year deal.

Witherspoon (6-3,195) was the first of two third-round draft picks (66th overall) by the 49ers in this year's draft out of Colorado. In three seasons with the Buffaloes, he appeared in 36 games (21 starts) and registered 77 tackles, three interceptions, one forced fumble, one fumble recovery and 28 passes defensed. In 2016, he earned Second-Team All-Pac-12 honors, appearing in 13 games (12 starts) where he registered 24 tackles, one interception, one forced fumble, one fumble recovery and 22 passes defensed.

His 22 passes defensed on the year led the nation and tied the school record for the most in a single season (22 passes defensed by Ben Kelly in 1998). As a junior, he played in 13 games (eight starts) and tallied 41 tackles, two interceptions and four passes defensed. In 2014, he played in 10 games (one start) and recorded 12 tackles and two passes defensed. As a freshman in 2013, he played at Sacramento City College, appearing in eight games where he notched 21 tackles, three interceptions, one forced fumble and seven passes defensed. A 22-year-old native of Sacramento, CA, Witherspoon attended Christian Brothers (Sacramento, CA) High School.