Coco Gauff welled up with tears early in her second-round match against Donna Vekić on Thursday night under the Arthur Ashe Stadium lights.

After double faulting to concede her service at 4-4 in the first set, cameras caught Gauff getting teary-eyed during the changeover.

Coco Gauff of the United States cries during a changeover against Donna Vekic of Croatia during their Women’s Singles Second Round match. Getty Images

She buried her head in her towel at one point.

Gauff’s serve has been a hot top of conversation at this year’s tournament, after she hired a new coach in Gavin MacMillan just days before it started.

Coco Gauff in tears after getting broken at 4-4 in the 1st set against Donna Vekic at the U.S. Open.

Tough scenes…

pic.twitter.com/s79HEqiSV0 — The Tennis Letter (@TheT

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