Dish Network has started a free preview of the Tennis Channel available from August 27 through September 9, 2012. Tennis Channel can be found in SD and HD on Dish’s channel 400, usually part of Dish’s America’s Top 250 and higher tier packages. Tennis Channel offers 24-hour coverage of the sport, with rights to the US Open, Wimbledon, Roland Garros (French Open), Australian Open, and others. According to a reader, Verizon’s FiOS TV service is also offering a free trial of Tennis Channel. Can any Verizon subscribers confirm this?