The right-hander incurred the injury to his right oblique less than two weeks ago, yet manager Bob Melvin reported Wednesday that Colon is already scheduled to throw a bullpen on Thursday in Texas. He's eligible to come off the DL on Tuesday.
"After he had the injury, I was surprised to see him coming along as quickly as he has," Melvin said. "I really didn't think at the time he'd have a chance to pitch in a game before the All-Star break, but there's a possibility of that."
The 39-year-old Colon, who has already given the A's 89 2/3 innings of work this season, was 6-7 with a 4.22 ERA in 15 starts before being sidelined. His injury coincided with righty Brandon McCarthy's recurring shoulder issues, leaving the A's two veteran rotation spots to fill. Yet they've managed just fine with fill-ins Tyson Ross and rookie A.J. Griffin, and Oakland starters entered Wednesday having posted a 1.77 ERA and .160 opponents average over the last 12 games.
"It's good to see," Melvin said. "Some of the younger guys that we haven't seen as much, like a Griffin, are doing well. I think it becomes something where they're pushing each other. One guy sets the bar and has a good game, and the next guy goes out there and tries to better. It kind of becomes a competition amongst pitchers to keep it on a roll."