El favorito Alexander Zverev se recuperó para derrotar 6-7 (8), 6-4, 6-3 al australiano Alexei Popyrin (18) para avanzar a las semifinales del Abierto de Toronto. Zverev,

Alexander sealed the deal in two hours and 42 minutes, overcoming a set deficit and outplaying his rival with a strong performance in sets two and three. Thus, the German secured his 21st Masters 100 semi-final, leaving Andy Roddick on 20.