Hoping to attract more tennis fans in Asia, the WTA is moving its season-ending championships from Istanbul to Singapore and will revamp it into a 10-day event with music, entertainment and tennis-related symposiums. ”We’re ultimately in the entertainment business and trying to broaden our reach,” WTA Chairman and CEO Stacey Allaster said in a telephone interview ahead of Monday’s formal launch. ”We know that it’s a great way for us to expand our fan base.” The shift to Singapore from 2014-18 marks the first time the event will take place in Asia.