NEW YORK - Denis Shapovalov advanced to the third round of the U.S. Open with an entertaining and error-filled 7-6 (6), 3-6, 7-6 (4), 6-3 win over France's Valentin Royer on Thursday.

Shapovalov picked up his sixth break on match point in a contest where both players struggled to hold serve.

The 27th-seeded Canadian fired 29 aces but hit into 43 unforced errors, two more than Royer, in a match that took three hours 36 minutes to complete despite lasting just four sets.

Royer had broken Shapovalov early in the first three sets and looked set to do so again in the fourth game of the fourth set. But the 26-year-old from Richmond Hill, Ont., saved five break points before completing the hold.

Shapovalov finally went ahead in the set when he broke to love, with Royer double-faulting on game

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