Eduard Folayang (right) of the Philippines fights with Kamal Shalorus (left) of Iran during their lightweight fight of the One Fighting Championship (OneFC) at the Mall of Asia Arena in Manila on May 31, 2013. AFP PHOTO
MANILA: In a caged ring at a newly built sports arena in the Philippine capital, 20 martial artists from around the world try to choke out, knock down or submit each other for thousands of paying fans.