McCown appeared to hit his thumb on a follow-through in the second quarter. He was replaced by second-year quarterback Mike Glennon.
McCown left the game with his team trailing the Falcons, 35-0. He had completed just five of 12 passes for 58 yards. He also threw an interception to Atlanta's Kemal Ishmael that was returned for a touchdown.
Josh McCown is out for the rest of the game with his thumb injury. — Scott Smith (@ScottSBucs) September 19, 2014