Indianapolis Colts quarterback Andrew Luck is chased by Minnesota Vikings' Erin Henderson during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Andrew Luck looks to pass during the first half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Minnesota Vikings' Christian Ponder (7) is tackled by Indianapolis Colts' Robert Mathis (98) during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Darron Cummings)

Indianapolis Colts quarterback Andrew Luck, right, runs out of the grasp of Minnesota Vikings' Jared Allen during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Minnesota Vikings' Adrian Peterson (28) runs during the first half of an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Minnesota Vikings' Percy Harvin, right, runs against Indianapolis Colts' Antoine Bethea during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Reggie Wayne (87) celebrates with teammate Andrew Luck (12) after making a 30-yard touchdown reception against the Minnesota Vikings during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Reggie Wayne (87) makes a touchdown reception against Minnesota Vikings' Mistral Raymond and Harrison Smith (22) during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings quarterback Christian Ponder is tackled by Indianapolis Colts' Kavell Conner during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Donnie Avery reacts following a reception during the first half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings' Toby Gerhart (32) is tackled by Indianapolis Colts' Antoine Bethea (41) during the first half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Andrew Luck runs during the first half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Indianapolis Colts' Donald Brown (31) runs against Minnesota Vikings' Jasper Brinkley (54) during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Indianapolis Colts' Reggie Wayne (87) reacts following a touchdown reception during the first half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts head coach Chuck Pagano reacts during the second half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Indianapolis Colts' Donnie Avery is tackled by Minnesota Vikings' Antoine Winfield during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings' Percy Harvin is tackled by Indianapolis Colts' Antoine Bethea (41) during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Indianapolis Colts quarterback Andrew Luck (12) is pressured by Minnesota Vikings' Brian Robison during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts quarterback Andrew Luck (12) is chased by Minnesota Vikings' Brian Robison (96) during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Minnesota Vikings' Kyle Rudolph (82) misses a catch during the second half of an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 16, 2012. Vikings' Stephen Burton caught the football for a 7-yard touchdown reception. (AP Photo/Michael Conroy)

Minnesota Vikings' Stephen Burton (11) makes a 7-yard touchdown reception during the second half of an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Cory Redding reacts during the second half of an NFL football game against the Minnesota Vikings in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Adam Vinatieri reacts after kicking a game-winning 53-yard field goal as Minnesota Vikings' Antoine Winfield (26)looks on during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. The Colts won 23-20. (AP Photo/AJ Mast)

Minnesota Vikings' Kyle Rudolph (82) makes a 6-yard touchdown reception against Indianapolis Colts' Jerraud Powers (25) and Jerrell Freeman during the second half of an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings head coach Leslie Frazier reacts during the second half of an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Indianapolis Colts' Andrew Luck reacts as he runs off the field after the Colts defeated the Minnesota Vikings 23-20 in an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/Michael Conroy)

Indianapolis Colts' Cory Redding (90) gestures as he leaves the field after the Colts defeated the Minnesota Vikings 23-20 in an NFL football game in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)

Minnesota Vikings' Christian Ponder looks to pass during the first half of an NFL football game against the Indianapolis Colts in Indianapolis, Sunday, Sept. 16, 2012. (AP Photo/AJ Mast)