Andreescu faces Mertens and Nadal meets Schwartzman in last eightWilliams has title in reach but Svitolina will apply pressure testTweet Bryan at @BryanAGraham or email him 12.41am BST
First set: *Andreescu 1-4 Mertens (*denotes next server)
Mertens falls behind 15-30 after three quick points and Andreescu may have a chance to break right back. But the Belgians rattles off three in a row, including an 11th unforced error by the Canadian on game point, to consolidate the break as the players change ends. Andreescu’s timing on the return seems off in the early going, but there’s time still to right the ship. 12.37am BST
Mertens breaks in fourth game of first set!
First set: Andreescu 1-3 Mertens* (*denotes next server)