The Falcons (3-7) host the Colts (8-2) on Thursday night.

Coach Bobby Petrino sidestepped whether Harrington will remain as Atlanta's starter for the rest of the season.

"Well, what we're doing, since this is such a short week, is we're worrying about the Indy game right now," Petrino said. "We have a little break after that, and we'll see how everything goes."

Since Petrino benched Harrington in Week 7, Leftwich is 0-2 as a starter. He missed two games with ankle injuries.

Petrino indicated Leftwich departed Atlanta's 31-7 loss to Tampa Bay last week because of an injury. The fifth-year veteran completed 15 of 28 passes for 106 yards. He also threw two interceptions and lost a fumble that Ronde Barber returned for a touchdown.

After calling trainer Ron Medlin when he returned home on Sunday night, Leftwich arrived early the next day at the team's training complex. Petrino said X-rays were negative.

The Falcons are 3-5 in games Harrington has started, but the sixth-year veteran helped Atlanta win two straight before Leftwich returned from ankle surgery.