US Open organizers have expressed "regret" for the way French tennis player Alize Cornet was treated for briefly taking off her shirt on court.

The U.S. Open is clarifying its rules about players changing their shirts during a match a day after Alize Cornet of France was penalized for doing so.

US Open organizers have expressed "regret" for the way French tennis player Alize Cornet was treated for briefly taking off her shirt on court. In the sweltering heat at Flushing Meadows on Tuesday, ...