Maria Sakkari’s first serve proved too strong for Iga Swiatek at the WTA Finals on Thursday with the Greek star winning her opening match of the event comfortably 6-2, 6-4.

“Yeah, I think it was a very solid match from my side. Obviously my serve really helped my game,” Sakkari said afterwards.

“I felt quite good with the altitude. I could control my shots pretty well. I think every day I’ll feel even better.”

Sakkari won 26 of the first 27 points on her first serve and broke her opponent in the third and seventh games of the first set.

Once she broke for a 4-3 lead in the second, the match over.

“I think finding the right way of serving here, it’s probably the key. You set up a point the way you want to,” Sakkari said.

“Definitely, I mean, having a percentage like that helps your game so much.”