Colts quarterback Peyton Manning has been limited in practice this week with a sore backside. The team fully expects him to play on Sunday against Houston despite what they are calling a "glute" injury. "Just a little soreness, so we're just kind of being careful with it," coach Jim Caldwell said. Manning has thrown for 3,171 yards, 21 touchdowns and nine interceptions for the undefeated Colts in 2009.