Apart from winning her maiden mixed doubles title in French Open with Ivan Dodig , she did not win any titles during her reign as world No. 1 .
Chan has been struggling in 2018 since Hingis retired .
Apart from winning Hingis ' maiden mixed doubles title in French Open with Ivan Dodig , Hingis did not win any titles during her reign as world No. 1 .
Chan has been struggling in 2018 since Hingis retired .