"We're going to get through the off-day [Thursday] and make a decision whether or not we're going to stick with six or go to five," manager Bo Porter said. "Clemens is going to throw [Tuesday], and we'll know more after he throws whether or not he's going to be able make his start."
If Clemens is able to pitch, he would start Saturday against Angels and would split left-handers Dallas Keuchel (Friday) and Brett Oberholtzer (Sunday). Among the candidates to perhaps be added to the rotation is rookie David Martinez, who was recently called up from Triple-A for his second stint with Houston.
Porter said the Astros aren't planning to shut down any additional starting pitchers because of their workload.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.