Ravens WR Derrick Mason had surgery in February to repair his scapula and the labrum in his left shoulder, and he could miss all of training camp as he recovers.

According to the Baltimore Sun, Mason hopes to be back on the field for the Ravens’ Sept. 13 season opener:

Asked if he would be ready for training camp in late July, he said, “Don’t know. I really don’t. All I can say for certain — well, not even for certain — if everything continues to progress the way it has been, I’ll be ready for the first game.”

Mason, a 12-year NFL veteran, injured his shoulder in Week 10 of 2008 but played the rest of the season, finishing with 80 receptions for 1,037 yards and five touchdowns. Mason has led Baltimore in receiving in three of the past four seasons.