Angelique Kerber held her nerve and held her serve, a combination that helped the Wimbledon champion beat Naomi Osaka 6-4, 5-7, 6-4 on Wednesday at the WTA Finals.

Kerber saved 13 of the 18 break points she faced, including five in the final game of the first set, to improve to 1-1 at the season-ending tournament. Osaka, who won this year’s U.S. Open, dropped to 0-2.

Angelique Kerber of Germany celebrates a set win over while competing against Naomi Osaka of Japan during their women’s singles match at the WTA tennis finals in Singapore, Wednesday, Oct. 24, 2018. (AP Photo/Vincent Thian)

Sloane Stephens and Kiki Bertens, who are both 1-0 in the Red Group, were playing in the second match on Wednesday.

Naomi Osaka of Japan return a shot while competing against Angelique Kerber of Germany during their women’s singles match at the WTA tennis finals in Singapore, Wednesday, Oct. 24, 2018. (AP Photo/Vincent Thian)

Kerber had a chance to win straight sets, but she was broken while serving at 5-4. In the final set, the German didn’t squander a second chance and an error from Osaka on match point ended it.

Naomi Osaka of Japan reacts while playing against Angelique Kerber of Germany during their women’s singles match at the WTA tennis finals in Singapore, Wednesday, Oct. 24, 2018. (AP Photo/Vincent Thian)

Osaka finished the match with 50 unforced errors and 42 winners, while Kerber had 30 unforced errors and 24 winners.

Naomi Osaka of Japan reacts after losing a point while playing  against Angelique Kerber of Germany during their women’s singles match at the WTA tennis finals in Singapore, Wednesday, Oct. 24, 2018. (AP Photo/Vincent Thian)

___

Naomi Osaka of Japan, left, greets Angelique Kerber of Germany after their women’s singles match at the WTA tennis finals in Singapore, Wednesday, Oct. 24, 2018. (AP Photo/Vincent Thian)

Source: The Associated Press