Teens shock Osaka, Tsitsipas

Defending champion Naomi Osaka of Japan and Greek third seed Stefanos Tsitsipas were both ousted from the US Open by 18-year-olds in epic stunners on Friday at Arthur Ashe Stadium.

Four-time Grand Slam champion Osaka was shocked by Canadian left-hander Leylah Fernandez 5-7, 7-6 (7/2), 6-4 after Spain's Carlos Alcaraz upset French Open runner-up Tsitsipas 6-3, 4-6, 7-6 (7/2), 0-6, 7-6 (7/5).

"Honestly the Alcaraz match gave me motivation and gave me the energy to do the same," Fernandez said.

"I saw his match and I saw the way he won and I'm like 'I'm going to do that next now."

After the upset, defending champion Osaka announced she was taking a break from playing tennis. "I honestly don't know when I'm going to play my next tennis match," Osaka said, wiping away tears. "I think I'm going to take a break from playing for a while."

Alcaraz is the youngest man in the US Open fourth round since 17-year-old American Michael Chang in 1989, and at any Slam since Ukraine's Andrei Medvedev in the 1992 French Open. "Incredible. Incredible feeling for me," Alcaraz said.

"This victory means a lot to me. It's the best match of my career, the best win. To beat Stefanos Tsitsipas is a dream come true and to win here is even more special for me."