He became the host of "Sports Central" at WGN in 1995 and it quickly became Chicago radio's #1 rated sports talk show. He and former Chicago Bears star Tom Waddle co-hosted the show for just over 10 years which at the time was the longest on air sports talk duo in Chicago radio history. After Waddle left to join ESPN Radio in February 2007, Kaplan hosted the show on a solo basis until March 2010. It was the longest-running sports talk show in Chicago (began in 1982), until March 2010 when the former Program Director Kevin Metheny, who was characterized in the Howard Stern movie "Private Parts" as Kenny "Pig Vomit" Rushton opted to replace the program with a non-sports oriented talk show. In December 2010, after the removal of Metheny, Kaplan signed a new long-term contract to stay at WGN Radio as the primary host of a new evening talk show called WGN Sports Night.