The San Francisco 49ers signed cornerback K'Waun Williams to a three-year contract extension through the 2020 season, the team announced Friday.
The 5-foot-9, 183-pound Williams originally signed a one-year deal with the 49ers on Feb. 22. In his first season in San Francisco, he has played in each of the team's first three games (one start) and registered 14 tackles and two passes defensed.