Complex sentence: Randy has been successful in his role as a TV analyst since joining ESPN in 2002, his knowledge of the game and the lingo associated with it, complements Ryan's ability to handle the "frame by frame" announcing of each match.
Split into simpler sentences: Randy has been successful in his role as a TV analyst since joining ESPN in 2002. His knowledge of the game and the lingo associated with it complements Ryan's ability to handle the "frame by frame" announcing of each match.