The Indianapolis Colts have released backup quarterback Tim Hiller and added two free agents to the roster.

Running back Allen Patrick and defensive back Glenn Sharpe both practiced with the Colts on Monday, three days before the team visits Green Bay for its third preseason game.

Patrick was Baltimore's seventh-round draft pick in 2008. The former Oklahoma player has also spent time with Cleveland, Jacksonville and the New York Giants.

Sharpe signed with Atlanta as an undrafted rookie in 2008 before joining New Orleans. The Colts' have already lost five defensive backs with season-ending injuries this preseason.

Hiller is an undrafted rookie from Western Michigan.