NEW YORK: Former world number three Stefanos Tsitsipas regained some of the touch lost during a recent rankings slump, with the high-profile qualifier dispatching Martin Damm 6-4, 6-4 on Tuesday at the Montreal Masters. The 98-minute first-round win sends Tsitsipas into a match with Brazilian Joao Fonseca. The 53rd-ranked Tsitsipas, winner last month in Gstaad, said that a coaching change — he split from his father Apostolos for a second time — is paying off now that he is under the guidance of coaches from Patrick Mouratoglou’s French academy.