Andrew Luck may not start regular season, but sees 'light at the end of the tunnel'

The Indianapolis Colts reported to training camp Saturday morning.

Quarterback Andrew Luck, who is on the preseason physically unable to participate list, said he's not ready to commit to playing the regular season opener.

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"It's hard for me to look beyond, really, today's rehab session," Luck said. "That's the approach I have to take ... if you want to get truly healthy. If you want to get better than you were before the injury."

Luck would not say whether he was throwing footballs, but confirmed that he had to start throwing with a tennis ball. And there were mobility and strength requirements that had to be met before that.

But he insists Colts fans should not worry.

"There's no reason to freak out," Luck said. "I don't know what day it's going to be, I don't know what week, I don't know when, but I definitely will be (better)."