Just below the top five women is a group of six women who have all won six WTA 1000 titles on hard courts; Monica Seles, Kim Clijsters, Caroline Wozniacki, Petra Kvitova, Simona Halep, and Swiatek.

Petra Kvitova, Gabriela Sabatini, and Hana Mandlikova star in our list of the best WTA players to never be world No 1.

Coach Rick Macci believes Coco Gauff's potential is "unlimited" but has identified her second serve and forehand as two shots ...