Los Angeles Angels' right-hander Jerome Williams pitched against the San Francisco Giants on Monday, and he didn't fare too well, allowing three runs in 3⅓ innings. After he was removed, he passed out in the clubhouse and was taken to the hospital with breathing problems. He was released, but the Angels aren't taking any chances:

Jerome Williams will be placed on DL. He's feeling fine, but still shaken up by what happened & worried. Only lightly throwing now. #Angels

— Alden Gonzalez (@Alden_Gonzalez) June 20, 2012

The official diagnosis as of now is asthma and anxiety. Williams was drafted and developed by the Giants, and he told Henry Schulman of the San Francisco Chronicle that his history with the Giants likely contributed to the episode.

Asked why he was so anxious facing a team he left seven years ago, Williams said, "I have no clue," but then added, "I felt I was amped the last time I faced them when I was with the Cubs (in 2005). I always want to try to do well against them. I came up with them. They’re the Giants."

Jered Weaver is taking Williams' spot on the active roster and starting on Wednesday.