The West Coast Derby Knockouts (WCDK) is a women's flat track roller derby league based in Ventura, California.

West Coast is a member of the Women's Flat Track Derby Association (WFTDA).

[1] The league grew from only 12 skaters in 2009, and by 2013 it was raising money for a local children's charity, in addition to teaching local children to skate.

[2] The founders of the local Sugartown Rollergirls banked track league originally skated with West Coast.

[5] This is made up of three teams: the TKOs, The Uppercuts and the Contenders as well as the Sluggers development squad.