From the AP:

Yankees rookie sensation Joba Chamberlain was suspended for two games Friday and fined $1,000, a day after he threw consecutive 98-99 mph pitches over the head of Boston's Kevin Youkilis.

Chamberlain will not appeal the penalty and was set to sit out Friday night and Saturday against Tampa Bay. Under the Yankees' rules for him, the 21-year-old reliever wouldn't have been available to pitch Friday, anyway.