HBO fights to stay on top in pay sports.(Inside Moves)

HBO won't see a slowdown of output from its sports division now that president Ross Greenburg is leaving the network after 33 years, but it clearly won't be the same place.

Under the purview of Greenburg, who replaced Seth Abraham as sports prexy in 2000, there have been 51 Sports Emmys, including for docs--"Lombardi," "Magic & Bird: A Courtship of Rivals" and the "When It Was a Game" series, to name a few--and other fare, such as the monthly newsmagazine "Real Sports With Bryant Gumbel," which remains one of the most respected programs on television.

But now, HBO programming toppers Michael Lombardo and Richard Plepler are left to contemplate who will replace …