HOUSTON -- The Astros placed left-hander Mike Hampton on the 15-day disabled list with a left shoulder strain and recalled right-hander Felipe Paulino from Triple-A Round Rock prior to Tuesday's game against the Florida Marlins.
Hampton was suppose to throw a bullpen session on Tuesday, and the Astros had hoped he would be available to start on Saturday against the Milwaukee Brewers. Hampton, however, was still feeling soreness in his shoulder Tuesday, and he opted not to throw and consult the team's trainers.
"It's still pretty sore, and it still hasn't improved since the game in Florida," Hampton said. "I can't start unless something drastic happens, and I don't see that happening."
Nursing a tender left shoulder and dealing with a pair of aging knees, Hampton was forced to miss his start Wednesday against the Marlins.
Injuries have forced Hampton to leave his past two starts early. His most recent start was on Aug. 13 in Florida. He exited after five innings with the strained shoulder. The 36-year-old had to leave his Aug. 8 start after two innings with a right knee sprain. He was later diagnosed with a torn lateral meniscus in the knee. He received cortisone injections in both his knees at that time.
Hampton is 7-10 with a 5.30 ERA in 21 starts this year.
Paulino will be back in an Astros uniform on Wednesday. He is 2-6 with a 7.28 ERA in 15 games, including 11 starts, with Houston this season. He posted a 3.12 ERA in seven starts at Round Rock this season.
Astros manager Cecil Cooper said right-hander Brian Moehler would be the likely candidate to make the start on Saturday.
Jason Grodsky is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.