SINGAPORE – Ahead of the defense of her BNP Paribas WTA Finals Singapore presented by SC Global title, wtatennis.com runs down 10 need-to-know facts about Poland’s finest, Agnieszka Radwanska…

1) Champion returns
Radwanska returns to Singapore for the sixth consecutive year – the longest active streak on the tour. Last year she finished the season in the best way possible, facing off against Petra Kvitova to win the WTA Finals championships match, 6-2, 4-6, 6-3.

2) Rank outsider
It might seem incredible, but right up until the US Open, Radwanska was still in with a shout of taking the World No.1 spot if she’d won the tournament. She arrives in Singapore as World No.3 after another year characterized by its consistency.

3) Early exit
Radwanska doesn’t have a great track record at the US Open, and this year was no different – she fell in the round of 16 at the hands of Ana Konjuh. She’s put a positive spin on that, though: she thinks that the early exit from the Slam gave her additional time to prepare for the Asian Swing, in which she once again excelled.

4) Cool in China
That’s been the case this year. Radwanska reclaimed the China Open title with a 6-4, 6-2 win over Johanna Konta, crowning a dominant week in which she did not lose a single set. It was her 20th career singles title, third of the year.

5) Success in Asia
Asia has traditionally been a happy hunting ground for Radwanska, who has won half of her 20 career titles there, including five of her last six.

6) Difficult defense
Radwanska is very well aware that it will be difficult for her to retain her title. “It’s the goal of everyone to qualify for the WTA Finals, and I’m happy to be returning to defend my title,” Radwanska said. “I’ve played at Singapore for a few years now, and qualifying again this year means I’ve had a great season – to be in the Top 8. It won’t be easy to defend my title, but that’s the goal. It will be exciting and a challenge to see different names and faces in this year’s field.”

7) Fabulous in fall
History is on her side, though – her tour record in the past five years shows that after the US Open she is the most difficult opponent to beat. Last year she went 17-4 in the Asian swing, winning all three WTA titles of the year in that stretch – and boosting her ranking from No.13 to No.5.

8) Five star
That meant she maintained her proud record as a fixture in the top five ranking slots – she dipped out in 2014, when she finished the year as World No.6.

9) Mandatory magic
After her win in Beijing this year, Radwanska became the fourth active player with three or more Premier Mandatory titles, joining Serena Williams, Maria Sharapova and Victoria Azarenka.

10) Major performer
Radwanska is one of four players to have reached the round of 16 at all four majors this year (along with Serena Williams, Madison Keys and Carla Suárez Navarro).