"I wanna thank my lord and savior #JesusChrist as he has answer another prayer," tweeted the cornerback. "Contract complete time to head to training camp!"
Williams will likely get a look as the team's nickel cornerback when the season opens and his run-stuffing ability has been the most-talked-about feature of his game. He'll compete with newly re-signed Drayton Florence, former first-round pick Leodis McKelvin, and veteran Terrence McGee in the suddenly depth-filled secondary.
Williams becomes the fourth draft pick to sign with Buffalo today joining Marcell Dareus, Johnny White, and Da'Norris Searcy. The signing leave LB Kelvin Sheppard as the final draft choice without a contract.
Williams will miss the team's first practice, which began at 3:30 PM, but should be on the field for tomorrow's first open practice.