"With two days of practice missed, (there's) pretty important stuff that we've put in and it's tough to reclaim that at this stage. We will see how his evaluation goes, but Curtis will end up starting the game."
Caldwell said Painter was "pretty excited" about his scheduled start against Tampa Bay on Monday.
With four-time most valuable player Manning sidelined for the foreseeable future, and possibly the rest of the season, the Colts have limped to a woeful 0-3 start to their 2011 campaign.
(Writing by Mark Lamport-Stokes in Los Angeles; Editing by Julian Linden)