NEW HAVEN, Conn. — Sophomore Matt MacDowell had two of his four RBIs during a four-run 10th after junior Dustin Selzer doubled home the go-ahead run to send the visiting Dartmouth Big Green to a 7-3 victory and a doubleheader sweep of the Yale Bulldogs on Saturday afternoon at Yale Field. Dartmouth (25-6, 10-4 Ivy) extended its winning streak to eight games, matching its best stretch of the season that came to start the campaign.

In the first game, senior Cole Sulser went the distance on the mound and sophomore Nick Lombardi drove in three runs as the Big Green cruised to a 9-1 triumph over Yale (8-24, 5-9 Ivy).

The two teams were tied at two entering the ninth inning of the nightcap when freshman Joe Purritano reached first base thanks to a passed ball on a swinging third strike. Freshman Trent Goodrich bunted him to second, and MacDowell followed with a single to right to plate Purritano and put Dartmouth on top 3-2.

Junior reliever Louis Concato quickly retired the first two batters but surrendered a single to Jacob Hunter. Big Green head coach Bob Whalen then summoned sophomore Thomas Olson to get the final out, but Hunter stole second, took third on an error and scored on single between short and third by Brent Lawson to tie the game at three. With the winning run on second, Olson got the third out on a liner to right, sending the game into extra innings.

In the tenth, senior Ennis Coble ripped a one-out double to right-center, and Yale decided to intentionally walk junior Jeff Keller, who leads the Ivy League in slugging percentage. Selzer foiled the strategy by sending a ball into the gap in left-center for an RBI double, then sophomore Nick Lombardi reached on an error to bring home another run. After a strikeout, MacDowell once again singled to right, this time bringing home two runs for a 7-3 lead.

The Bulldogs got a leadoff single in the bottom half, but Olson (2-0) retired the next three hitters to finish off the victory.

Dartmouth senior southpaw Kyle Hunter did not get the decision, but pitched well over his seven stanzas, allowing two runs on six hits and four walks while striking out six.

MacDowell was 3-for-5 for the game with four RBIs, including a solo home run in the third, his second four-bagger of the year. Selzer had two hits and scored two runs to go with his game-winning RBI, and sophomore Bo Patterson also had a pair of knocks.

Yale hurler Michael Coleman was just as good as Hunter, tossing 7.1 innings of two-run ball, one earned, while yielding five hits and a pair of walks with four strikeouts. Cale Hanson (0-2) took the loss after giving up five runs, only one of which was earned, on four hits and two walks with four strikeouts as well over 2.2 frames.

All nine starters in the Big Green lineup had a hit in the first game as Dartmouth scored at least once in six of the seven innings. Lombardi drove in the first two runs of the game in the first with a two-out, two-run double to score Coble and Keller.

The Bulldogs got one of those runs back in the bottom half on singles by Nate Adams, Eric Hsieh and Lawson.

In the second, sophomore Matt Parisi singled home Goodrich, who had led off the inning with a base hit. Selzer launched his third home run of the season leading off the third, and MacDowell added an RBI single in the stanza for a 5-1 lead.

Dartmouth chased Yale starter Rob Cerfolio (1-5) in the fourth when Coble started things off with a single and went to third on a Keller double. Selzer watched four wide ones go by from reliever Ben Joseph to load the bases, and Lombardi lofted a sacrifice fly to center.

Keller doubled again in the sixth, bringing Coble home and tying the Big Green single-season record with his 20th two-bagger. After Selzer singled, Lombardi hit into a double play, allowing Keller to cross the plate to make it an 8-1 game. Dartmouth tacked on a run in the final frame thanks to a pair of walks and throwing error.

Sulser (4-2) tossed his second-straight complete game, surrendering the one run on eight hits while throwing 97 pitches in his seven innings. He did not walk a batter and struck out five as he won the 19th game of his career, second all-time at Dartmouth to Mike Remlinger ’88, who enjoyed a 14-year career in Major League Baseball.

Dartmouth, which now has a four-game lead in the Rolfe Division of the Ivy League with six games remaining, will complete its four-game series at Yale on Sunday with a doubleheader starting at noon.

Notes: Purritano extended his hitting streak to 10 games in the opener, but went 0-for-5 in game two ... Keller, the nation’s leader in doubles per game, needs just three more doubles to set a new Ivy League single-season record ... Lombardi’s error in the ninth of the second game ended his streak of errorless games at third base at 56 games. He had handled 103 consecutive chances successfully.