 Stefanos Tsitsipas extended his perfect set record on Friday at the 2023 Australian Open to 9-0 by moving past Tallon Griekspoor into the fourth round. In a 6-2, 7-65, 6-3 victory, the Greek saved a set point late in set two before powering through the finish in Rod Laver Arena. The win sets up a ... Tsitsipas Sets Sinner Showdown In Australian Open Fourth Round ... 