HARVARD AT DARTMOUTH  BROWN AT CORNELL  COLUMBIA AT YALE  PENN AT LAFAYETTE  COLGATE AT PRINCETON  LAST WEEK  SEASON TO DATE  PERCENTAGE LARRY GRAFSTEIN Associate Sports Editor  Harvard, 20-18  Brown, 26-22  Yale, 46-6  Penn, 20-17  Colgate, 27-24  4-1  16-6  .727 JEFF TOOBIN Sports Editor  Harvard, 22-17  Brown, 20-17  Yale, 23-6  Lafayette, 17-13  Colgate, 27-24  5-0  15-7  .682 MICHELLE HEALY Associate Sports Editor  Harvard, 17-13  Cornell, 24-21  Yale, 28-7  Penn, 14-3  Colgate, 21-20  5-0  15-7  .682 NELL SCOVELL Associate Sports Editor  Harvard, 14-10  Brown, 21-14  Yale, 28-7  Penn, 14-7  Colgate, 24-21  5-0  14-8  .636 DEAN ROSOVSKY guest selector, sports fan  Harvard by 3  Brown  Yale  Penn  Colgate