http://aspnetwebstack.codeplex.com/SourceControl/latest#src/System.Web.Http/HttpRouteCollectionExtensions.cs

routes.MapHttpRoute(

    name: "CreateUser",

    routeTemplate: "api/User/{cUser}",

    defaults: new

    {

        controller = "User",

        action = "CreateUser",

        cUser = RouteParameter.Optional

    }

);

routes.MapHttpRoute(

    name: "AllGames",

    routeTemplate: "api/Game/{playerId}",

    defaults: new

    {

        controller = "Game",

        action = "GetAllGames",

        playerId = RouteParameter.Optional

    }

);

config.Routes.MapHttpRoute(

        name: "LegacyUriRedirect",

        routeTemplate: "{*catchall}",

        defaults: new { controller = "URI", action = "LegacyUriRedirect" }

    );