 WCIU came into the fold in the early 2000s due to demands by The WB Television Network for WGN to devote more time to the network's programming, and later on the same has been expected by The CW, though WGN still does push back CW primetime programming to accommodate game broadcasts.Len Kasper has been the Cubs' television play-by-play announcer since 2005.Bob Brenly, a former major league catcher and Arizona Diamondbacks manager, was the Cubs' color commentator from 2004 through the 2012 season.