It looks like Bridgehampton Polo, one of the premier happenings of the summer season out east, is in for competition. Equestrians’ eyes will also be on tomorrow’s Kings Polo Classic in Colts Neck, NJ. The event is conceived and produced by Russian scion Simon Garber, who will play in the Star Vodka-sponsored matches along with his three sons. Garber has also managed to lure away some pros who normally compete in Bridgehampton, and stars Mauricio Devrient Kidd and Nacho Figueras are expected.