British number one Kyle Edmund went through to the quarter-finals of the Shanghai Masters with victory over Chile's Nicolas Jarry 7-6 (7-5) 6-3.
Edmund, 23, ranked 14th in the world, took a tight first set, serving an ace to win the tie-break.
Jarry broke 11th seed Edmund's first service game in the second set to go 2-0 up before the Briton took control.
Edmund will play fourth seed Alexander Zverev in the last eight, after he beat Australia's Alex de Minaur 6-1 6-4.
Elsewhere, world number three Novak Djokovic comfortably beat Italy's Marco Cecchinato 6-4 6-0 to play Kevin Anderson or Stefanos Tsitsipas in the next round.