Garbine Muguruza saw off fellow-Spaniard Paula Badosa 6-3, 6-3 and Anett Kontaveit outlasted Maria Sakkari 6-1, 3-6, 6-3 to punch their tickets on Tuesday to the WTA Finals championship match here.

In their first career meeting, Muguruza’s superior firepower put Badosa on the back foot and she broke the Indian Wells champion for a second time with a forehand winner to take the first set.

Badosa’s frustration boiled over during the changeover and she was unable to hold serve in the lengthy second game of the second set, giving the former world No. 1 another early break on the sun-drenched court.

Muguruza fended off Badosa’s three break point chances in an 11-minute third game to take a 3-0 lead and rolled on from there, firing an ace to go up 5-2 and sealing the win when Badosa hit a backhand into the net on match point.

“It was a tough match facing another Spaniard in the semi-finals ... so it was tricky. But I’m very happy that I got the win.” The loss ends a breakthrough year for Badosa, who will finish the season at a career-best world number eight.