Swiatek ends WTA Finals campaign with win

That left Badosa, on her 24th birthday, not wanting to expend too much energy, and that was apparent at times as Swiatek claimed a 7-5 6-4 victory.

The Pole, who won her maiden grand slam title at the French Open last year, battled hard to take the first set and then recovered from a break down in the second to finish her stay in Mexico on a positive note.

Second place in the Chichen Itza group will go to the winner of the day's second clash between Sakkari and Sabalenka - with Anett Kontaveit waiting in the semi-finals.

Badosa won the first titles of her career this year in Belgrade and Indian Wells, and is among six players to have made their top-10 debut this season.