SINGAPORE - As the 2017 BNP Paribas WTA Finals Singapore presented by SC Global gets underway, here are the stats, streaks, and milestones that have dominated the conversation.
2003: The year the current round-robin format was re-introduced at the WTA Finals, after 10 years of a 16-player knock-out format.
5: Times in WTA Finals history in which each player competing in the singles competition represented a different country. In fact, all five occurrences have happened in the last six years. This year's field hails from Romania, Spain, Czech Republic, Ukraine, USA, Denmark, Latvia, and France.
4: Consecutive years Simona Halep has qualified for the WTA Finals, the longest active streak.
3: Players making their WTA Finals debut in singles: Elina Svitolina, Jelena Ostapenko, and Caroline Garcia. This is the fifth time three debutantes have qualified since 2003 (2004, 2007, 2015-16), when the tournament changed from a 16-draw knockout to its current format.
8: Years since Venus Williams last qualified for the WTA Finals, having last qualified in 2009. This is the joint-longest gap between appearances, level with Jennifer Capriati, from 1992 to 2000.
4: Different cities in which Venus has played the WTA Finals: Los Angeles, New York, Doha, and Singapore.
2010: The last time a player younger than Ostapenko qualified for the WTA Finals. At 20 years, 143 days, Ostapenko is the youngest qualifier since Caroline Wozniacki qualified then, aged 20 years, 112 days.
2: Age of Ostapenko when Venus played her first WTA Finals in 1999.
11: Years since a French player qualified for the WTA Finals in singles (Amelie Mauresmo).
5: Titles won by Svitolina, which leads the tour. Karolina Pliskova and Anastasia Pavlyuchenkova follow with three titles apiece.
10: Doubles titles won by Chan Yung-Jan, the most on tour. Chan won nine titles with Martina Hingis and one title with her sister Chan Hao-Ching.
0: Times the World No.1 and World No.2 faced off in 2017. It did not happen in 2016 either. The earliest No.1 Halep and No.2 Garbiñe Muguruza could face off in Singapore is the semifinal stage.
15: Consecutive matches won by Svitolina in the spring, the longest win-streak of any player in 2017. She won Taipei City (five wins), went 2-0 for Ukraine in Fed Cup action against Australia, was triumphant in Dubai (after 1R bye, five wins), won one match at Kuala Lumpur before withdrawing prior to her second-round match, then reached R16 at Indian Wells (after 1R bye, two wins) before losing to Muguruza in three sets.
11: Match win-streak currently enjoyed by Garcia, who comes into Singapore having won 11 matches in 14 days to win Wuhan and Beijing and qualify for her first WTA Finals. She opens against Halep on Monday.
4: Players who have made their Top 10 debut in 2017: Svitolina, Ostapenko, Garcia, and Kristina Mladenovic.
2006: The last time two Frenchwomen were ranked in the Top 10 (Mauresmo, Mary Pierce)
10: Top 10 wins tallied by Svitolina (10-3) and Wozniacki (10-5) in 2017, a tour best.
56: Match wins for Wozniacki (56-20), a tour best.
2011: The last time Wozniacki won 56 or more matches in a season. That year she went 63-17.
1: Player in the field to make more than one major semifinal in 2017: Venus. The American veteran made the Australian Open final, the Wimbledon final, and the US Open semifinals.
1: Player in the field who has not won a title in 2017: Venus. The last player to qualify for the WTA Finals without winning a title that season was Svetlana Kuznetsova in 2008.
7: Consecutive years that the Czech Republic has had a player in the singles field. Petra Kvitova qualified from 2011-15, Lucie Safarova in 2015, and Pliskova in 2016-17.
19: Three-set matches won by Ostapenko. The 20-year-old is an astounding 19-7 in 2017.
11: Tiebreakers won by Venus in 2017. In fact, she has lost just one tiebreaker this year (11-1).
13: Times Pliskova hit 10 or more aces in a single match in 2017.
4: Consecutive seasons in which Pliskova has hit over 400 aces.
13: Regular season tournaments played by Venus in 2017, the fewest of any player in the field.
22: Regular season tournaments played by Wozniacki and Garcia in 2017, the most of any players in the field. Mladenovic, an alternate, played 24 tournaments.
1: Match lost by Garcia when she wins the first set in 2017. She is 38-1 when winning the first set this year.
7: Times an alternate has had to take the court since 2003. The last time an alternate suited up was in 2012 (Sam Stosur).
21: Singles finals that were decided in three-sets in 2017.
42: Different title winners at 57 events this season.
13: Maiden title winners in 2017. There were 10 first-time winners in 2016.