Here’s a quote from an article in http://www.TennisOne.com
By Adrianna Outlaw
(June 28, 2010) Vera Zvonareva brought towel vision to Court 12 today.
Sitting on her court-side seat with a towel draped over her head during
changeovers, Zvonareva tried to block out everything except her relationship with the ball.
I actually cover this technique in my DVD set. In most recreational matches people want to BS during the changover. This practice, although polite, won’t help you win many matches. You should be focusing on as Brad Gilbert says, “Who is doing what to who?”
Isolating yourself with the towel takes guts in a recreational match with your buddies, but when you start whomping them consistently they’ll be doing the same thing before too long.