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US Open winEmail katy.murrells@theguardian.com | Tweet @KatyMurrells 7.31pm BST
Federer has Dzumhur on a piece of string on the third point of the fourth game, and the spectators are lapping it up. I doubt Dzumhur is. The Bosnian, however, leads 30-15, and the diminutive 27-year-old jumps into a backhand and drills it down the line for 40-15. Dzumhur looks well set to take his first game of the set but a double fault combined with a netted effort and it’s Federer’s advantage. Federer can’t, however, secure the double break and Dzumhur takes the next three points. It’s 3-6, 3-1 Federer. 7.26pm BST
Federer, with that late momentum from the last game, sprints to 0-40 on Dzumhur’s serve. Some net charging from Dzumhur reduces his arrears to 30-40 but the third break point is a charm for Federer, who has come from break point down in the previous game to break for 2-0. Make that 3-0, as Federer finally glides through the gears and reduces his unforced error count.