America’s No. 1 Boxing Network, SHOWTIME continues its 20th anniversary celebration of putting on world-class, great fights on Saturday, March 4, when talented, undefeated, hard-hitting super middleweight world champions Jeff “Left Hook’’ Lacy (International Boxing Federation) and Joe Calzaghe (World Boxing Organization) collide in the main event on SHOWTIME CHAMPIONSHIP BOXING. The most significant unification world title bout in years – and clearly the biggest in the division since Roy Jones Jr. met James Toney in 1994 – will air live on SHOWTIME at 9 p.m. ET/PT (delayed on the west coast) from the MEN Arena in Manchester, England (2 a.m. local time). The highly anticipated, long-awaited match up is promoted by Gary Shaw Productions, LLC, and Frank Warren’s Sport Network. [details]