The blockbuster men's singles final between No. 1 seed Novak Djokovic and No. 2 seed Roger Federer was also highlighted by a historic moment in the umpire's chair: Eva Asderaki-Moore became the first women to serve as the chair umpire of the men's singles final at the US Open.

This also marks the third Grand Slam singles final of Asderaki-Moore's career, having previously been in the chair for the 2011 US Open women's singles final and 2013 Wimbledon women's singles final. She has been a staple chair umpire on the WTA since 2001.

"Eva has been in the contest in the last three or four years, and this year she got the nod. In terms of ability, she's done many men's matches at the Slams and she's certainly excelled," chief umpire Bruce Littrell told USA Today Sports. "Skill is the number one factor. Eva is one of the top chair umpires in the world. Those are the facts."

The US Open also became the first Grand Slam to have a female chair umpire for both the men's and women's singles finals in the same year, with Marija Cicak in the chair for Saturday's final between No. 26 seed Flavia Pennetta and Roberta Vinci.

Both Asderaki-Moore and Cicak are Gold Badge umpires, the highest rating a chair umpire can earn. Of the 19 Gold Badge umpires working during this year's US Open, five are women. Women also chair umpired 41 of the 127 men's singles matches at this year's US Open.