The now annual sporting event has closed a series B round featuring Sky, Liberty Media, Allianz, World Wrestling Entertainment and Hearst Ventures.

Drone Racing League (DRL), the US-based operator of a sporting league for unmanned aerial vehicles, has completed a $20m series B round co-led by media companies Sky and Liberty Media.

Sky and Liberty co-led the round with venture capital firm Lux Capital, while additional participants included Allianz, the insurance firm that is also DRL’s main sponsor, as well as sports entertainment provider World Wrestling Entertainment and Hearst Ventures, a subsidiary of media group Hearst.

The series B participants were rounded…