Painter failed to throw a touchdown pass for the fourth consecutive week, and finished with a quarterback rating below 42 for the third time in four tries.
"I'm disappointed," said Painter, who's thrown for 1,315 yards, five touchdowns and seven interceptions in eight games.
"We didn't do some things today that we would like to do a little better. We made a few mistakes there."
"(Painter) was a bit unsettled, maybe, on drives, and I just made a change to see if we can get a spark," Caldwell said. "But we'll evaluate that, take a look at it and see where we go from here."
See, things aren't so bad! What? They are? Yeah ... we're sorry.
The Associated Press contributed to this report.