Martina Hingis was on TV.
Martina Hingis . In July 2013 , Hingis came out of retirement to play the North American hard-court season , partnering Daniela Hantuchová . US Open Series . It was organized in 2004 as a way to focus more attention on American tennis tournaments by getting more of them on domestic television . Until 2004 , most summer North American tournaments were not on television , the exceptions being the highly televised ATP World Tour Masters 1000 events in Canada and Cincinnati . The eight non-Masters tournaments now enjoy about 50 hours of television combined -- about two hours on each day of their final weekends , chiefly on ESPN2 , which is where ESPN shows its tennis programming .