UPDATE 1-Tennis-Dubai Championships men's singles semifinal results

March 1 (Infostrada Sports) - Results from the Dubai Championships Men's Singles Semifinal matches on Friday 3-Tomas Berdych (Czech Republic) beat 2-Roger Federer (Switzerland) 3-6 7-6(8) 6-4 1-Novak Djokovic (Serbia) beat 4-Juan Martin Del Potro (Argentina) 6-3 7-6(4)