After the game, Halladay acknowledged he has a sore right shoulder. He said he will undergo tests this week in Los Angeles and be examined by Dr. Lewis Yocum.
The right-hander did not take questions from reporters after his second poor outing in a row.
Kevin Slowey (1-2) pitched seven shutout innings for his first win since September 2010. He allowed two hits while striking out seven and walking two.
Slowey had been winless in 22 major league appearances, including 15 starts. His previous victory came on Sept. 18, 2010, as a starter for the Minnesota Twins.
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