Watch Sandy Ryan vs. Mikaela Mayer for Free: How to Stream the Movie Online at 123Movies. . Sandy Ryan defends her WBO welterweight world title against Mikaela Mayer at The Theater at Madison Square Garden. And she will do so with a former Mayer confidant in her corner. Kay Koroma, who helped train Mayer from Olympic standout to professional world champion, will help train Ryan for this career-defining main event.