The Bryan brothers' quest for the calendar Grand Slam is over.
Bob and Mike Bryan lost 3-6, 6-3, 6-4 to Leander Paes and Radek Stepanek in the U.S. Open semifinals Thursday, ending a 28-match winning streak in the Grand Slams and stopping their run two wins short of the Slam.
The Aussie team of Ken McGregor and Frank Sedgman remains the only men's doubles pairing to win all four majors in a single year, back in 1951.
The twins' last loss in a Grand Slam match came in last year's Wimbledon semifinals against Jonathan Marray of Britain and Frederik Nielsen of Denmark.
Stepanek and Paes return to the U.S. Open final where, last year, they fell to the Bryans.