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Jack Draper and Harriet Dart are other British players in action today.
Now, here we go on Louis Armstrong stadium, with Cerundolo v Murray. Cerundolo is seeded 24th.
Updated at 11.11 EDT
On Amazon Prime they are discussing Andy Murray’s toils with cramp in recent days. Rusedski reckons Murray’s pre-tournament haircut is aimed at keeping his head cooler and reducing the risk of cramping. That’s a new one on me.
Updated at 11.08 EDT
Arguably the biggest first-round clash of the lot, of course, is Serena Williams v the world No 80 Danka Kovinic, which is coming up at midnight UK time / 7pm EST.
Serena Williams. Photograph: Matthew Stockman/Getty Images
Updated at 11.05 EDT
Medvedev, sporting a snazzy Lacoste tracksuit, is pictured doing some stretching in preparation for his meeting with Stefan Kozlov.
Daniil Medvedev. Photograph: Elsa/Getty Images
Other tracksuits are available.
Updated at 11.01 EDT
This article was written by Luke McLaughlin and originally published on www.theguardian.com