New York:Mahesh Bhupathi and his partner Mark Knowles of Bahamas outwitted Croatian Ivan Ljubicic and Frenchman Michael Llodra in the men's doubles quarter final at US Open here.
Bhupathi and Knowles seeded third beat Ljubicic and Llodra 6-4, 4-6, 7-6 in the quarter-finals at the Flushing Meadows to book their berth in the semi-final.
The pair have now joined Leander Paes and his Czech partner Lukas Dloughy, who moved into the semi-final of the men's doubles earlier on Tuesday.
Paes and Dloughy, seeded fourth, beat seventh seeded Wesley Moodie of South Africa and Dick Norman of Belgium 6-3, 5-7, 6-4.
The Paes-Dloughy pair will now meet top seeded Bob and Mike Bryan of United States in the semifinals.
Meanwhile, second seeded pair of Leander Paes and Zimbabwean Cara Black, booked their birth in mixed doubles final of the US Open by beating 6-2, 3-6, 10-5 the fifth seeded pair of Hsieh Su-wei, Taiwan, and Kevin Ullyett, Zimbabwe, in the semifinals.
Paes and Black earlier secured a berth in the semifinal of the mixed doubles category defeating Australian-Swede combination of Rennae Stubbs and Robert Lindstedt 7-5 3-6 10-6 yesterday.