US Open 2019: Federer surprised by number of errors in opening two wins

Roger Federer, who made 45 unforced errors, had to come from a set down once again as he progressed into round three of the US Open with a 3-6, 6-2, 6-3, 6-4 win over Damir Dzumhur.

US Open 2019: Federer surprised by number of errors in opening two wins