Latest fourth-round updates from Flushing Meadows

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De Minaur is racing away, up 5-0 in the second set against Riedi and about to serve. Riedi, ranked 435 in the world, has had a fine run to this point but … oh, wait – a spanking forehand sets up a second break point and he takes it, pumping the right fist in relief, a game finally on the board. Nonetheless, De Minaur leads 6-3, 5-1.

Rublev has a break point … and he takes it after Auger-Aliassime goes long with a backhand. Rublev has a 7-1 record against Auger-Aliassime – they last met at Hamburg in May – and he’s up 2-1 in the first set.

De Minaur is looking rather comfortable over on Louis Armstrong. He’s already 3-0 up in the second set against Riedi, breaking the Swiss player’s serve twice. An overhead smash seals the second break.