PROVIDENCE, R.I. — J.J. Franco singled home the winning run — which had reached base on an error — in the bottom of the 10th to cap the day and send host Brown to a doubleheader sweep of the Dartmouth Big Green on Saturday afternoon at Murray Stadium. The Bears (10-18, 4-10 Ivy) cruised to a 12-3 victory in the opener before handing Dartmouth (10-19, 5-9 Ivy) an agonizing 7-6 defeat in extra innings.

The nightcap was a back-and-forth affair, but after nine innings, the score was knotted at six. Dartmouth had an opportunity to take the lead in the top half of the 10th when senior Jeff Keller led off with a single and was bunted to second by junior Bo Patterson. But Brown reliever Max Ritchie escaped by retiring the next two hitters, stranding Keller at third.

In the bottom half, the Big Green defense uncharacteristically committed its fourth error of the game, allowing Noah Shulman to reach second with one down. A wild pitch sent him scurrying to third, but sophomore reliever Duncan Robinson got the strikeout he needed for the second out. Franco wasted no time at the plate, however, slapping the first pitch he saw back through the box for the game-winner.

That unearned run was part of a trend during the second half of the game as the final five runs by the two teams were all unearned. Dartmouth took a 5-4 lead in the sixth when Patterson stroked a leadoff single, stole second and took third on an errant throw from the catcher, then scored on a grounder to short off the bat of junior Matt MacDowell.

A Big Green throwing error in the seventh allowed the tying run to cross the plate, and with two out, Wes Van Boom brought that runner home with a single to right for a 6-5 Bear lead.

Patterson wreaked havoc on the bases again in the eighth after dropping a single into right-center. Ritchie threw wildly on a pickoff attempt, allowing Patterson to advance to second, and junior Matt Parisi delivered a clutch two-out single to bring him home and knot the score at six.

Brown dented the scoreboard first on a Shulman RBI double and a Robert Henry infield hit that allowed Daniel Massey to score from third base in the second inning.

But Dartmouth came right back with four runs in the top of the third, beginning with back-to-back RBI doubles by sophomore Nick Ruppert and junior Thomas Roulis. Junior Nick Lombardi drove in a run with a single, and Keller capped the frame with a sacrifice fly.

In the fifth, the Bears tied the game at four and knocked Big Green hurler Louis Concato from the game after Kevin Guthrie laced a two-out, two-run double.

Ritchie (2-2) picked up the win with four innings in relief of Christian Taugner, who gave up five runs, four earned, on seven hits and two walks with five strikeouts in his six innings of work. Dartmouth rapped out five hits off Ritchie, but scraped out just one unearned run.

Robinson (5-2) was stuck with the loss due to the three unearned runs he surrendered in five innings on the mound. He yielded five hits and one walk while punching out four batters.

In the opener, the Bears scored in each of the six innings they came to plate. They jumped on Big Green starter Beau Sulser to start the game with three consecutive hits, the third being an RBI single by Dan Kerr. Sulser induced Marc Sredojevic to ground into a double play, but a second run crossed the plate to give Brown an early 2-0 lead.

Van Boom made it 3-0 with a solo homer, his second of the year, for the lone run in the second. The Bears broke open the game with four more in the third, keyed by a two-run single off the bat of Will Marcal and a two-run double by Massey.

The Big Green put a pair of runs on the board in the fourth when sophomore Joe Purritano smacked a two-run blast, his second long ball of the season. But Kerr delivered another RBI single in the bottom half, plating Shulman who had doubled. The damage could have been worse, but the second baseman Roulis snared a line drive and doubled up a runner on second to end the inning with an unassisted double play.

After that great play, Roulis led off the fifth by belting his first four-bagger of the year to make it an 8-3 game.

When Massey launched his fifth homer of the season to bring home two more runs in the Bear half of the fifth, Sulser was lifted for junior Adam Frank, who retired the final two batters on foul pops. Brown tacked on two more in the sixth with a pair of singles, a walk, a hit batter and three wild pitches.

Anthony Galan (2-3) earned the victory for the Bears, tossing six innings during which he allowed three runs on eight hits and two walks while striking out four. Taylor Wright recorded the final three outs to close out the game.

Sulser (2-4) suffered the worst outing of his career, yielding 10 runs over 4.1 innings. At the plate for the Big Green, MacDowell and senior Dustin Selzer were perfect at 3-for-3 and 2-for-2, respectively. Purritano’s homer was the seventh of his career, five of which have come against Brown.

Kerr had three of the Bears’ 14 hits in the game while Massey produced four RBIs with a double and a home run.

The two teams will conclude their four-game series with another doubleheader on Sunday at noon.

Notes: Brown had not swept a doubleheader (or even won two games in the season's series) from the Big Green since the 2007 season … Purritano has seven home runs in his career, five of which have come against Brown … Dartmouth head coach Bob Whalen still has 499 victories in his 25 seasons at the helm of the Big Green … Harvard and Yale split a twinbill today, leaving Dartmouth two games back in the Rolfe Division standings with six games to play.