A previously announced light heavyweight matchup between kickboxing champ Tyrone Spong (1-0) and Californian knockout artist Angel DeAnda (11-2) has been officially installed as the headliner for next month’s World Series of Fighting 4 event. WSOF officials recently announced that Spong vs. DeAnda will be the featured contest of the Aug. 10 event, which takes place Aug. 10 at Citizens Business Bank Arena in Ontario, Calif. Additionally, the night’s five-fight, main-card lineup is now set with Marlon Moraes (10-4-1) vs. Brandon Hempleman (9-1) taking the night’s co-feature slot and Ray Sefo (2-1) vs. Dave Huckaba (20-5), Nick Newell (9-0) vs