Naomi Osaka had some difficulties in the 1st round of the US Open against Misaki Doi but ultimately she regrouped and won in three sets. The end result was 6-2 5-7 6-2. Speaking immidietly post match for the on court interview she admitted:

"It was very difficult. I kind of expected it because of the first round nerves, and she's also a very tough opponent. I knew there was a chance it could get really long. I just have to see what happens tomorrow and how I feel."

Many wondered about Osaka's fitness heading into the match because a few days ago she retired from the Western & Southern Open final due to a hamstring injury. Her play was pretty good and there wasn't any sign of discomfort. She did criticize some aspects of her game:

"I felt like my ball toss could have been better, but it did what it needed to do on the very important points, so I can't be that mad. I still have to practice."

Whe asked about her next opponent, the tricky Camila Giorgi, Osaka said she needed to be careful:

"I've played her before. She's very unpredictable for me. I just have to be on my toes."

https://twitter.com/usopen/status/1300659673423638528