The Hologic WTA Tour heads back to Southern California for the final WTA 500 event of the season at the San Diego Open.

Here's what you need to know:

When does the tournament start?

The San Diego Open is a new WTA 500 tournament that begins on Monday, Oct. 10. This is the first time the WTA tour has held a tour-level event in San Diego since 2013. The tournament is played on outdoor hard court at the Barnes Tennis Center and will use the Dunlop Grand Prix Regular Duty ball. 

San Diego features a 28-player singles draw and 16-team doubles draw. Qualifying begins on Saturday, Oct.8.

When are the finals? 

The singles and doubles finals will both be played Sunday, Oct. 16. The doubles final will begin at  1:30 p.m. and the singles final at 4 p.m.. 

Who is playing in San Diego?

The last WTA 500 event of the season features seven of the Top 10 players. The lowest-ranked player with direct entry in the main draw is No.20 Petra Kvitova. 

Sixteen of Top 20 entered in San Diego main draw

Projected Top 8 seeds:

1. Iga Swiatek
2. Paula Badosa
3. Aryna Sabalenka
4. Jessica Pegula
5. Maria Sakakri (WC)
6. Coco Gauff
7. Carolina Garcia
8. Daria Kasatkina

What does the draw look like?

Updated: Beatriz Haddad Maia withdrew before qualifying began, moving Liudmila Samsonova into the main draw in her place. Bianca Andreescu will now open against Samsonova. Click here for a full draw breakdown. 

What is the prize money and ranking points on offer?

First Round: 1 point/$8,080
Second Round: 55 points/ $11,185
Quarterfinals: 100 points/$20,505
Semifinal: 185 points/$42,010
Final: 305 points/$71,960
Champion: 470 points/$116,340

Key Storylines

Top-ranked Americans Pegula and Gauff return to action: World No.6 Jessica Pegula and No.8 Coco Gauff return to competition for the first time since their strong runs at the US Open. Pegula and Gauff are in strong position to secure their qualifying spots for the WTA Finals in Fort Worth, sitting at Nos.3 and No.4 on the Race Leaderboard, respectively. They're also at No.5 on the Doubles Race Leaderboard.

Race to the WTA Finals tightening up: With two weeks left in the regular season, only No.1 Iga Swiatek and No.2 Ons Jabeur have locked in qualification for the WTA Finals. Along with Pegula and Gauff, Caroline Garcia, Daria Kasatkina, Aryna Sabalenka and Veronika Kudermetova will hold the remaining six qualifying positions going into San Diego.

Currently on the outside looking in with a chance to pick up points in San Diego are Maria Sakkari (Race No.9), Paula Badosa (Race No.12), Madison Keys (Race No.13), Danielle Collins (Race No.16), Liudmila Samsonova (Race No.19), and Elena Rybakina (Race No.22).

Swiatek's strong form continues: The US Open champion returned to action this week at the AGEL Open in Ostrava and is already into her eighth final, extending her win streak to 10 matches. San Diego will be Swiatek's last regular season tournament before she finishes off her season at the WTA Finals.

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