Wimbledon champion Barbora Krejcikova knocked out of US Open in 2nd round

Frances Tiafoe is getting the rematch he wants, a second shot at Ben Shelton at the U.S. Open.

But there won't be a second straight Grand Slam title for Barbora Krejcikova.

The Wimbledon champion was knocked out of the U.S. Open in the second round on Wednesday, defeated by Elena-Gabriela Ruse 6-4, 7-5.

The No. 8-seeded Krejcikova won her second Grand Slam singles title this summer, but then she didn't play any matches after the Paris Olympics. She acknowledged last week not knowing where her level of play was.

Turns out, it wasn't good enough.

I mean, winning Wimbledon is amazing. It's a great, great, great result, I'm very proud about it and how I was able to handle everything there, said Krejcikova, who hadn't played a tournament on hard courts since February.

I think I was playing quite well, definitely better than in the first match. I think my game was improving, but it just wasn't enough.

No woman has won Wimbledon and the U.S. Open in the same year since Serena Williams