Media Circus: Pedro Martinez joins TBS; Tim McCarver's replacement
10g. As the studio host of TBS's postseason coverage, Olbermann will leave his ESPN2 show on Sept. 30 and return on Oct. 21. But the show goes on as Larry King guest hosts for Olbermann from Oct 1-3 followed by Jeremy Schaap (Oct. 8-10) and Cowherd (Oct. 15-17).