Professional Tennis Competition Kicks Off In StocktonJuly 13, 2015 | Rich IbarraIf you're a tennis fan, you can see some of the best young women players in the world this week at the $50,000 Pro Circuit Challenger in Stockton. Some players are looking for a comeback, others for a chance to play in the U.S. Open next month. Listen /Update RequiredTo play audio, update browser or Flash plugin.