Learn No Gi grappling techniques from five top mixed martial artists at a seminar and fundraiser for Frank's Fight at Renzo Gracie Academy in Midtown on Saturday, April 27, 2013. Frankie Edgar, Igor Gracie, John Danaher, Rafael "Sopo" Natal and Rolles Gracie will lead the event, which is open to both men and women, as well as spectators.

Tickets cost $40, and additional donations are also welcome. Proceeds will go toward Franks Fight, which is helping a 37-year-old MMA enthusiast fund his battle against stage-three testicular cancer.

The seminar runs from 2 to 4 p.m. To learn more, buy tickets or donate, visit the event's website.