CHARLESTON, SC, USA - The first tour-level clay court event of 2019 features a who's-who on the winner's wall of the Volvo Car Open.

No.2 seed and defending champion Kiki Bertens is the recipient of a first-round bye, but in total, five former winners in Charleston are in this year's full draw, released on Saturday.

They include No.5 seed Caroline Wozniacki and unseeded Andrea Petkovic, who join Bertens in the bottom half of the draw and could could square off in a quarterfinal match.

Petkovic could face either No.15 seed Maria Sakkari or Alizé Cornet in the second round, and all are potential third-round opponents for Bertens.

Wozniacki could face Bertens in the last eight as she also receives a bye. The Dane will face either Germany's Laura Siegemund or American wildcard Emma Navarro first up, while Petkovic will first face American Varvara Lepchenko.

Top seed Sloane Stephens, the 2016 champion, and wildcard Sabine Lisicki, who won the title a decade ago in 2009, feature in the top half of the draw.

Stephens will face the winner of first-round match betwen Spain's Sara Sorribes Tormo and Hungarian Fanny Stollar, while Lisicki opens against No.13 seed Sofia Kenin.

Elsewhere in the draw, No.3 seed Aryna Sabalenka is in the top half with Stephens, and could potentially face her doubles partner and No.6 seed Elise Mertens in the quarterfinals.

The duo will play on the same side of the net on Sunday against Samantha Stosur and Zhang Shuai, as they attempt to pull off the Sunshine Double by winning the Miami Open.

In Charleston, each will get a first round bye, before squaring off against either a qualifier or Kristyna Pliskova, and Veronika Kudermetova or Kaia Kanepi, respectively. 

Read more: Mertens, Sabalenka match energies as Sunshine Double edges closer

No.7 seed Julia Goerges, runner-up to Bertens last year, could get another crack at the Dutchwoman in the semifinals, as she and No.7 seed Anastasija Sevastova headline the third quarter in Bertens' half of the draw. 

Goerges will face either a qualifier or American Taylor Townsend in her first match, while Sevastova will see either Jessica Pegula or Irina Khromacheva in the second round.

This week's event will also see the return of hometown favorite and former World No.48 Shelby Rogers, who returns to her home tournament unranked following a year on the sidelines after knee surgery.

Rogers, a wildcard, faces Russia's Evgeniya Rodina in the first round, with the winner a potential second round opponent for 2017 runner-up and current No.10 seed Jelena Ostapenko, or Johanna Larsson.

To see the full Charleston draw, click here.