World famous tennis coach and now Vineyard summer regular, Nick Bollettieri will be on Island this Sunday, August 6 serving up clinics for kids at the Vineyard Youth Tennis Center. The clinics are sold out but at noon, Mr. Bollettieri will give a motivational speech, which is open to all. And at 12:30 p.m. there will be a professional tennis exhibition between Vineyard Youth tennis pro Michael Halisky and West Chop tennis pro David McNamara.