Beau Sulser gave up two runs in the first but no more as Dartmouth won the first game, 7-2, but fell in the nightcap, 6-1, with Michael Ketchmark providing the lone run with a solo shot.
The host Bulldogs defeated the Big Green by scores of 8-0 and 11-3 on Sunday afternoon, boosting their lead in the Rolfe Division to four games with six to play.
Due to rain in the New Haven area, the doubleheader scheduled between Dartmouth and Yale has been postponed until Monday.
Dartmouth enters the weekend trailing Yale by two games in the Rolfe Division standings, but can make up ground by taking the four-game series.
Dartmouth had eight straight batters reach base in the sixth to blow open a one-run game as the Big Green defeated the Eagles on Tuesday afternoon, 8-3.
For the second time this season, Dartmouth senior Beau Sulser has been named the Ivy League Pitcher of the Week
After taking the first game against Brown on Sunday, 3-1, Dartmouth tied the score in the eighth and again in the ninth on a shocking two-out, three-run homer before succumbing in the 10th, 9-8.
Michael Danielak and Cole O'Connor each yielded a solitary run over seven innings as Dartmouth took two from the Bears on Saturday afternoon, 5-1 and 7-1.
The baseball team welcomes the Bears to Red Rolfe Field at Biondi Park this weekend for a four-game series.
The Big Green offense drew 11 walks and had 20 base runners, but left the bases loaded three times as the River Hawks escaped Hanover with the win.
Junior Jack Fossand earned the honor for throwing seven innings of one-hit shutout ball in a 5-0 win over Cornell on Sunday.
Thanks to some defensive gems behind him, Jack Fossand twirled seven one-hit innings to earn a 5-0 victory in the second game after the Big Red won via shutout themselves, 2-0.