WTA To Introduce Two New Trials in Innovation - Coaching From Player Box and Electronic Line Calling on Clay ·     Electronic line calling will be trialed on clay for the first time, utilizing FoxTenn technology at the Volvo Car Open in Charleston ·     WTA will also trial coaching from the player box starting at the Dubai Duty Free Tennis Championships and … [Read more...] about WTA To Introduce Two New Trials in Innovation – Coaching From Player Box and Electronic Line Calling on Clay