Jim Irsay cannot "unequivocally" say that Andrew Luck will play in their Week 1 opener against the Los Angeles Rams on Sept. 10.

The Indianapolis Colts believe Luck will be off the physically unable to perform list before the start of the regular season, but his status for Week 1 remains in the air. Luck will need some practice time once he is taken off of PUP.

"I don't want to act that it is a foregone conclusion that he's not going to be starting out there [against the Rams]," Irsay said. "I mean, he could but also could not. We don't see an extended delay, but we're not going to put a timetable on it. We will not put any pressure on this decision."

Luck originally injured his right shoulder in Week 3 of the 2015 season. He played through the shoulder pain until he finally had the surgery in January.