Ring Life takes an intimate look inside the life of Sergio Martinez. Martinez vs Macklin happens Saturday, Mar. 17, at 10:00pm ET7:00pm PT on HBO. For more information on HBO Boxing, visit . br br Watch HBO Sports series and events online at HBO GO® br With HBO GO, you can watch your favorite HBO Sports series and events on your iPad® (), iPhone® () or Android™ () smartphone. Free with your HBO subscription through participating TV providers.