The 20th anniversary celebration of SHOWTIME CHAMPIONSHIP BOXING continues with a world championship doubleheader Saturday, May 6, 2006, on SHOWTIME (9 p.m. ET/PT, delayed on the west coast). In one of the 12-round world title fights, Alejandro “Terra” Garcia (25-1, 23 KOs) will defend his World Boxing Association super welterweight belt against local favorite and former world welterweight champion Jose Antonio Rivera (37-4-1, 24 KOs). In the first half of the twin bill promoted by Don King Productions at the DCU Center at Worcester, Mass., the top two cruiserweights in the International Boxing Federation (IBF), Steve “U.S.S.” Cunningham (19-0, 10 KOs) and Guillermo “El Felino” Jones (33-3-2, 26 KOs), will collide for the vacant IBF cruiserweight crown. [details]