COCO GAUFF claimed just a second win in 13 meetings against Iga Swiatek to book her spot in the semi-finals of the WTA Finals in Saudi Arabia.

The American’s 6-3 6-4 victory also ensures Aryna Sabalenka will finish the year as world number one, with defending champion Swiatek no longer able to overtake the Australian Open and US Open winner.

The Pole, playing just her second match under new coach Wim Fissette, can still join Gauff in the semi-finals, but she will need to beat Jessica Pegula in her final match.