Allen was injured in the second quarter and did not have a catch in the game.
Allen played on 68% of Indianpolis’s offensive plays last week, while Coby Fleener played on 48% of the snaps.
Allen, 25, caught 29 passes for 395 yards and eight touchdowns in 13 games last season. He missed 15 games in 2013 due to a hip injury, after starting every game for the Colts as a rookie in 2012.
Fleener, Andrew Luck’s teammate at Stanford, was third on the team last year with 51 receptions and 774 yards.
- Dan Gartland