Thursday, August 18
SWIMMING, showing of “Raiders Of The Lost Ark,” benefit East Hampton Y.M.C.A. RECenter Hurricanes swim team, Havens Beach, Sag Harbor, 6 p.m.
SLOW-PITCH, playoffs, game three of women’s final, if necessary, 7 p.m., and game five of men’s final, if necessary, time to be announced, Terry King ball field, Abraham’s Path, Amagansett.
Saturday, August 20
BENEFIT SOFTBALL, Travis Field tournament, quarterfinal round games from 8:30 a.m., home run derby final, 11, tournament final, 7:45 p.m.
ARTISTS-WRITERS GAME, Herrick Park, East Hampton, 2 p.m., preceded by batting practice at noon.
ROAR FOR A CURE CARNIVAL, East Hampton Indoor/Outdoor Tennis Club, Daniel’s Hole Road, Wainscott, 2-6 p.m.
POLO, Hampton Cup, Certified vs. KIG, Two Trees Stables, Bridgehampton, 4 p.m.
Sunday, August 21
RUNNING, Ellen’s [5K] Run, Southampton Hospital, 9 a.m.
Monday, August 22
CAMPS, for rugby, East Hampton High School, and squash, Southampton Recreation Center, through Friday, September 26.