Tony Romo didn't do much throwing or running during the Cowboys' first day of organized team activities on Tuesday, but one thing is becoming clear: The starting quarterback is on track to begin training camp in late July on time.

Romo, who underwent back surgery last December, said he's thrown with full velocity for nearly a month and half and that he's feeling good.

"You start off with a certain number of throws you're going to do," Romo said. "A certain number of reps, and then you take it a little bit more and a little bit more and you make sure your body keeps getting comfortable. Been going with that progression here for a while so it's been good."

Tuesday was a bad day at Valley Ranch with starting middle linebacker Sean Lee going down with a left knee injury while getting blocked during a screen pass.

Yet, Romo's recovery from back surgery to repair a bulging disc, and the fact he's throwing passes, is the best news the Cowboys can take right now.

Romo said he's spoken with other players who have had a similar surgery and they've been able to come back to play. Romo mentioned Hall of Famers Troy Aikman and Joe Montana have come back from similar back surgeries.