Roy Halladay threw a bullpen session Sunday, throwing off a mound for the first time since shoulder surgery in early May. Pitching coach Rich Dubee said Halladay tossed about 20 pitches, all fastballs.

It's the first time he's thrown from the mound since undergoing shoulder surgery in May and the team is hoping to get their ace back in their rotation by late August or early September.  The Phils hope to be in a pennant race when Halladay returns or the team could use September as a time to evaluate the pitcher to see if they should bring him back in 2014.

Halladay, 36, will be a free agent at the end of the season. The Phillies have said they’d like to re-sign him.