Angel City was one of the first leagues in Southern California to become a member of the Women's Flat Track Derby Association (WFTDA),[6] joining in December 2007.

[7] The Hollywood Scarlets represent Angel City at the WFTDA competitive level and play for international rankings in the organization.

[12] They finished in 3rd place, thus qualifying for the 2013 WFTDA Championships in Milwaukee, Wisconsin, for the first time in the history of the Angel City Derby Girls.

In 2014, the Scarlets, ranked #7 overall, entered the Division 1 Playoffs in Salt Lake City as a #2 seed and left at the same position, qualifying them for the Championship Tournament in Nashville, Tennessee.

They entered the 2015 Playoff cycle at #8 overall, placing them in Omaha in the #2 seed position where they again faced Minnesota for the chance to take on the perennial champions in the final game, Gotham Girls Roller Derby.

[16] Though Angel City lost, they did score more points against Gotham than any team had during the course of the season, and qualified for the Championship in Saint Paul, Minnesota.

[18] At Division 1 Playoffs in Vancouver, Angel City finished in 2nd place for the third straight year, and again advanced to Championships.

[19] At the final tournament in Portland, Angel City defeated Montreal Roller Derby in their opening game, but then fell in the quarterfinal bout against Gotham, 197–168.

[20] In 2017, Angel City was the second seed at D1 Playoffs in Seattle, Washington, and won their quarterfinal against Tampa Bay Derby, 287–87.

[23] At Champs, Angel City won their opening game against Minnesota 281–144,[24] but was then knocked out of the medal round by Denver, 196–165.

[28] At WFTDA Championships in New Orleans, Angel City won their opening game against Jacksonville before losing to Victoria in the quarterfinals, and ended their weekend with a consolation round victory over Montreal, 199–118.

[29] In 2019, Angel City maintained the #7 spot for much of the season, sending the Hollywood Scarlets to the WFTDA playoffs as a second seed at Winston-Salem, NC in September 2019.