Ronda Rousey stopped Gina Carano with her signature armbar just 17 seconds into the two fighters’ double comeback bout

Gina Carano knows it sounds preposterous to return to a sport as dangerous as mixed martial arts 17 years after her last bout.

Former UFC champion Ronda Rousey has created fresh controversy before her much-awaited return to MMA. The former Olympic medalist is set to face Gina Carano on Saturday in her…