Two of the most popular players on the tour, Petra Kvitova and Agnieszka Radwanska, took the court.

After Radwanska stormed out to a 6-2, 2-0 lead, Kvitova and her huge lefty game began catching fire.

The Czech won eight of the next 10 games to sneak out the second set, 6-4, and go up 2-0 in the third.

But Radwanska didn’t panic – she steadied the ship to break back and get the decider back to 3-all…

And, with her crouch shots in full flow, she pounced – she reeled off the last three games in a row.

The Pole got a bit emotional after closing out a hard-fought 6-2, 4-6, 6-3 championship victory.

The WTA Finals represents the biggest title of Radwanska’s career – it was her 17th overall WTA title.

Beyond that, she went in as a big underdog – Kvitova had won six of their eight career meetings.

But she has one advantage now – she’s 3-2 against Kvitova at the WTA Finals, and 2-0 in Singapore.

Kvitova and Radwanska posed with WTA legend and WTA Finals Ambassador extraordinaire Chris Evert.

Going into the fall, Radwanska hadn’t won a WTA title in more than a year – she’s won three since.

By virtue of reaching the final, the Pole also passed $20 million in career prize money. Kvitova too.

She’s the first player in WTA Finals history to win the title after going 1-2 in the round robin.

And she’ll now be No.5 on the year-end WTA Rankings – just edging Kvitova, who will finish at No.6.