Falcons cornerback Isaiah Oliver, who was off to a strong start playing nickel cornerback, suffered a knee injury Sunday against Washington and will miss the rest of the season.

The Falcons also placed Oliver and punter Cameron Nizialek (right hamstring) on injured reserve on Tuesday. Oliver will have surgery to repair his knee.

The Falcons signed kicker Elliott Fry and safety Shawn Williams to the practice squad and promoted defensive tackle Mike Pennel and punter Dustin Colquitt to the Falcons’ 53-man roster from the practice squad.

Oliver, who was drafted in the second round (58th overall) of the 2018 draft, has played in 50 games and made 33 starts. He had 11 tackle this season, a forced fumble and a quarterback hit.

Avery Williams, a rookie, took over for Oliver after he went down early in the second quarter after getting blocked by Washington’s J.D. McKissic.

Pennel, 30, is 6-foot-4 and 330 pounds. He has played in 91 games and made 16 starts. He’s played with the Packers, Jets and Chiefs.

Colquitt, 39, has a 16-year NFL career with the Chiefs, Steelers and Jaguars.

Williams, 30, played for the Georgia Bulldogs and Early County High School. He played the past eight seasons for the Bengals, playing in 119 games, including 61 starts.

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