The end of the Federer-Zverev match was overshadowed by an unusual incident, Zverev stopping a rally with Federer leading 4-3 in the second-set tie-break after a ball boy dropped a ball. Zverev won the replayed point with an ace and nudged into a 5-4 lead before Federer inexplicably netted with a simple forehand volley to hand the German two match points, the second of which he took on his own serve