A major case has been filed against the Los Angeles dodgers in a move that could make their owner come to the Court. Mr. Selig said he was forced to reject the 17-year deal with Fox Sports, valued at $2.7 billion, because it continued what he said was the McCourts' pattern of using money from the club for personal reasons instead of investing it in the franchise.

"Such a diversion of assets would have the effect of mortgaging the future of the franchise to the long-term detriment of the club and its fans," Mr. Selig said in a statement. "We owe it to the legion of loyal Dodger fans to ensure that this club is being operated properly now and will be guided appropriately in the future."

Mr. McCourt plans to "vigorously" explore options and remedies to the veto, a spokesman said. "All the requirements for the Commissioner to approve the Fox transaction were put in place by last Friday," the spokesman added, noting the court had approved the TV deal and Mr. McCourt had provided all information requested by Major League Baseball. Ms. McCourt was not immediately available for comment.