Preview the upcoming HBO Pay-Per-View event, Action Heroes. Morales vs. Maidana and Guerrero vs. Katsidis takes place Sat., April 9 live on pay-per-view beginning at 9pm ET6pm PT. For more information, visit br Watch HBO Boxing events online at HBO GO® br With HBO GO, you can watch HBO Boxing events on your iPad® (), iPhone® () or Android™ () smartphone. Free with your HBO subscription through participating TV providers.