Wimbledon begins on Monday with defending champion Roger Federer opening play on Centre Court against Dusan Lajovic, while seven-time winner Serena Williams commences her campaign against Dutchwoman Arantxa Rus on Court No. 2.

Women’s title holder Garbine Muguruza opens play on Centre Court on Tuesday against local wildcard Naomi Broady.

Here are 10 standout stats to look at from the Wimbledon women’s singles draw.

6 – teenagers are in this year’s women’s draw, Claire Liu (18), Marketa Vondrousova (19), Katie Swan (19), Sofia Kenin (19), Vera Lapko (19) and Anna Blinkova (19).

7 – Wimbledon singles titles Serena has won.

7 – In the Open Era, only seven women have won Roland Garros and Wimbledon back-to-back. 2018 French Open champion Simona Halep will try to join that small group.

14 – Garbine Muguruza hasn’t lost a Grand Slam first round in any of her last 14 majors.

21 – players aged 30 or older are in the women’s main draw this fortnight.

24 – This Wimbledon, Serena is bidding to equal Margaret Court’s all-time record of 24 Grand Slam titles won. The American currently has 23.

24 – There have been 24 successful title defences at Wimbledon, most recently Serena winning in 2015 and 2016.

47 – Alize Cornet extends her consecutive Grand Slam appearance streak to 47 this Wimbledon, the eighth longest streak of consecutive appearances in a row.

87 – match wins for Venus Williams at Wimbledon against 15 losses, the third-most in the Open Era and most among active players.

319 – Grand Slam match wins Serena has accumulated throughout her career, the most in the Open Era.