Lee, a dominant lefty, was scheduled to be traded to the New York Yankees and the deal looked all but finalized.
This afternoon, however, talks have stalled after the Mariners became concerned over second baseman David Adams' health. Adams is currently dealing with a sprained ankle and is not playing.
The deal seemed to please everyone. The Yankees get another star to add to their rotation, and to pitch alongside CC Sabathia, A.J Burnett, Phil Hughes, and Andy Pettitte.
The Mariners were going to acquire David Adams, a young prospect, and catcher Jesus Montero, who is currently one of the best prospects in baseball.
Lee is scheduled to take the hill tonight opposite of Phil Hughes for what will surely be a good pitchers' duel.