Coco Gauff did not win a Grand Slam this season, but she might have learned more lessons in defeat. After an up-and-down season, Gauff went back to the drawing board and changed coaches after the US Open.

The youngest player to win the season-ending WTA Finals since Maria Sharapova two decades ago, Gauff leaves the first professional women's tennis tournament in Saudi Arabia more than $4.8 million richer and with a WTA title at every level.