Danielle Collins of the United States returns the ball during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States celebrates after the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States returns the ball during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins (L) of the United States greets Caroline Garcia of France after the women's singles 3rd round match at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States celebrates during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Caroline Garcia of France waves to the spectators after the women's singles 3rd round match against Danielle Collins of the United States at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States celebrates during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States celebrates during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Danielle Collins of the United States gestures during the women's singles 3rd round match against Caroline Garcia of France at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)

Caroline Garcia of France reacts during the women's singles 3rd round match against Danielle Collins of the United States at the Australian Open in Melbourne, Australia, Jan. 18, 2019. (Xinhua/Bai Xue)