Complex sentence: The game show premiered on June 13,2009 on GSN with Fred Roggin serving as host, having left his hosting position on "GSN Live" on July 2,2009 in order to pursue the show full time.
Split into simpler sentences: The game show premiered on June 13,2009 on GSN with Fred Roggin serving as the host of the program. Roggin left his hosting position on "GSN Live" on July 2,2009 in order to pursue the show full time.