Plenty of tennis players at the US Open agree: Don't sleep on the benefits of a good nap, especially ahead of a night match.

Whether at a hotel or on one of the beds in the “Player Quiet Room” down the hall from the locker rooms or anywhere else they can find a spot to stretch out, these Grand Slam athletes appreciate the net gains offered by extra Zs during the tournament being played this week and next.

“In the evening, I get tired, like everybody else, so that's why I have to take a nap,” said Tatjana Maria, a 37-year-old mother of two from Germany who lost to defending champion Coco Gauff under the lights in Arthur Ashe Stadium on Wednesday night. “I have to rest pretty much the whole afternoon to be ready for the evening.”

She's not alone in a sport where the action can begin anywhere from 11 am to 11 pm — and, on occasions, even later.

The way a lot of competitors look at it, no matter their country, ranking or age, is that if you don't snooze, you lose.

“If I feel tired, I want to sleep, so I go to sleep. Maybe if I have the first match at 11 am, I don't have enough time. But any other match, I probably will take a nap for 10 or 15 minutes,” said Zhang Zhizhen, a 27-year-old who won a silver medal for China in mixed doubles at the Paris Olympics. “Sometimes in the afternoon, I will sleep for one or two hours."

Not everyone in tennis is a napper, of course, but those who aren't tend to be jealous of their colleagues who are.

“I see other players taking naps, and I'm like, I wish I could.' I'd love to kind of unwind like that,” said 2020 Australian Open champion Sofia Kenin, a 25-year-old American. “But, I'm too fired up before a match. There's adrenaline and nerves.”

Bianca Andreescu, the 2019 US Open champion, suggested one way to counter that sort of reaction: She downs a shot of espresso shortly before lying down.

“The coffee doesn't kick in fully until 30 to 90 minutes after, so ... I wake up super refreshed after” what typically will be 25 minutes of slumber, the 24-year-old from Canada said. “The power nap is the most effective one.”

Many players appreciate the benefits of nodding off whenever and wherever they can.

Whether that's on a first-come, first-served basis in the designated space in Ashe — set up in 2022, it has three lounge chairs in a main room; four twin beds in a side room; and four chaise lounges in another — or a place not necessarily designed for dozing off.

“I've done some weird spots... I've done it at (tournament) restaurants. I've done it on the ground at a gym,” said Denis Shapovalov, a 25-year-old Canadian who reached Wimbledon's semi-finals in 2021.

What about during a match? Leave it to Nick Kyrgios to show it can be done.

The 2022 Wimbledon runner-up, who missed nearly all of the last two seasons because of injuries and is appearing on ESPN during its US Open coverage, leaned way back in his sideline chair on changeovers while playing Andy Murray in New York in 2015, closing his eyes and clutching a towel as if it were a blanket.

“Just taking a nap, I guess,” Kyrgios said that day. “It's good for you.”