Sixty-eight leadliners ages 2 through 7 got the weeklong Hampton Classic Horse Show going Sunday morning in the Grand Prix ring as triumphant music played and parents and relatives waved and cheered them on.

“I’ve been so very fortunate,” Paul Annacone said last week at the outdoor players’ lounge at the U.S. Tennis Open in Flushing Meadows. His tennis career, which started on the humble courts at Mashashimuet Park in Sag Harbor, brought him three A.T.P. titles and a career-high ranking of 12th in the world.