Greece's Stefanos Tsitsipas was tested against Spain's Alejandro Davidovich Fokina but ultimately prevailed in a marathon match Tuesday, winning 7-5, 6-7 (1), 6-4 to advance to the Round of 16 at the ABN Amro World Tennis Tournament in Rotterdam, Netherlands. The match lasted over two and a half hours, even though Tsitsipas, ranked No. 4 in the world, won on aces 15-0. Fokina was helped by three Tsitsipas double faults a