“American Masters” is opening Saturday at Mark Borghi in Bridgehampton with a reception from 6 to 8 p.m. It will be on view through mid-August. Grain Surfboards Gallery in Amagansett will present “Salty Drawers,” drawings, paintings, and scrimshaw by Paton Miller and Peter Spacek, two inveterate surfers, from Saturday through July 16. A reception will take place Saturday from 6 to 9 p.m. and an artist chat will happen on July 8 at 7 p.m.