Elise Mertens (R) of Belgium/Aryna Sabalenka of Belarus celebrate after the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019. (Photos: Xinhua)

Elise Mertens of Belgium/Aryna Sabalenka (L) of Belarus celebrate during the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Elise Mertens (R) of Belgium/Aryna Sabalenka of Belarus celebrate after the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Elise Mertens (R) of Belgium/Aryna Sabalenka of Belarus react during the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Anna-Lena Groenefeld (L) of Germany/Demi Schuurs of the Netherlands compete during the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Elise Mertens (R) of Belgium/Aryna Sabalenka of Belarus compete during the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Elise Mertens (R) of Belgium/Aryna Sabalenka of Belarus celebrate after the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.

Elise Mertens (L) of Belgium/Aryna Sabalenka of Belarus compete during the women's doubles semifinal between Elise Mertens of Belgium/Aryna Sabalenka of Belarus and Anna-Lena Groenefeld of Germany/Demi Schuurs of the Netherlands at the 2019 WTA Wuhan Open tennis tournament in Wuhan of central China's Hubei Province, on Sept. 27, 2019.