HOUSTON -- Astros relief pitcher Doug Brocail threw a simulated game Thursday at Minute Maid Park and will begin another Minor League rehab stint later this week.

Brocail, on the disabled list since Aug. 5 with a strained right shoulder, will pitch the first of four games at Triple-A Round Rock beginning Saturday. He'll throw one inning Saturday, two innings on both Monday and Wednesday and one inning Friday before taking a couple of days off and rejoining the team in Chicago on Aug. 31.

"I felt really good," Brocail said after throwing one inning to hitters Thursday. "I think I gave up a bomb and a couple of hits, but I felt good. I can't complain one bit."

Brocail, 42, has been limited to 8 1/3 innings this season in 10 games because of three stints on the disabled list. He missed 14 games in April with a right rotator cuff strain and 75 games from May 4 until July 29 with a left hamstring strain.

The right-hander felt so good following Thursday's simulated game he went to the outfield and played long toss with teammates.

"I threw 57 pitches two days ago in the bullpen and yesterday played long toss with Wesley [Wright] on his throwing program and wasn't stiff at all today," he said. "Facing hitters, there's always that added adrenaline, so we'll see how I feel."