Always enjoyed Virginia Wade at Wimbledon (must have been the calm demeanor and British accent), Chris Evert at the US Open, and anytime Jimmy Connors was in the booth anywhere. Evert's marketability at retirement in 1989 was such that she could have easily displaced any television commentator. However, it was obvious that her focus had turned towards starting a family.
Tracy Austin had more of a natural media IQ in comparison to Pam Shriver. Tracy defnitely knows how to turn it on for the cameras.