Tennis: Tsitsipas moves into quarter-finals at Toronto ATP tournament

August 13, 2021 3:04 AMTORONTO, CANADA (AFP) - Stefanos Tsitsipas turned 23 on Thursday (Aug 12) with a solid win into his fourth ATP Masters 1000 quarter-final of the season as he beat Olympic silver medalist Karen Khachanov 6-3, 6-2 in Toronto.