WINTER HAVEN, Fla. — Sophomore Chris O’Dowd hit a pair of two-run homers and three other Big Green hitters collected four hits as Dartmouth (8-4) hammered UMBC (3-12), 16-3, on Friday afternoon at Chain O’ Lakes Park to complete a four-game sweep of the Retrievers. O’Dowd’s round-trippers came in his first two at-bats and were his first two of the season, extending his hitting streak to 19 games.

Juniors Jake Carlson and David Turnbull, along with sophomore Ennis Coble, each provided four knocks to the 21-hit offensive explosion, giving freshman left-hander Mitch Horacek plenty of run support. The rookie allowed just two runs on seven hits in six innings on the hill, striking out two without walking a batter.

O’Dowd cranked his first bomb of the day in the bottom of the first with one out and junior Joe Sclafani, who had singled, on first. Dartmouth added an unearned run when senior Jason Brooks reached on an error after O’Dowd’s blast, moved to second on a grounder and scored on a Coble single to left for a 3-0 Big Green lead.

In the third, Dartmouth broke open the game with a seven spot. Four straight singles to start the inning brought home two runs, and when senior Brandon Parks walked to load the bases, UMBC pulled starter Jon Cohn (0-3) in favor of Sean Swetnam. Turnbull immediately stroked a single to center to score another run, then Sclafani lofted a sacrifice fly for the first out. A fielder’s choice off the bat of senior Sam Bean plated Parks, then O’Dowd followed with a moonshot to right-center, making it 10-0.

The Retrievers got two runs back in the bottom half with Kevin Kean hitting a one-out triple to right and Michael Pesci bringing him home with a double. Brian Klukowicz then lined a single to center, allowing Pesci to score.

Horacek settled in after that, retiring the next nine hitters before allowing consecutive singles with one out in the sixth. But the southpaw was aided by the pitcher’s best friend, an inning-ending double play deftly turned by Sclafani and senior Jeff Onstott up the middle.

In the seventh, Kean came through with a two-out single to score Dustin Ferguson, who had doubled, to make it a 10-3 game.

The Big Green bats came out to play again in the eighth, beginning with an RBI triple off the bat of Onstott. Coble singled him home to send Swetnam to the showers. Carlson and Parks each greeted Retriever reliever Sam Bashioum by singling with Coble touching the plate, then Turnbull and Sclafani hit back-to-back doubles for the final runs of the day.

Each of the Dartmouth starters scored at least one run with Brooks leading the way with three. O’Dowd drove in four runs while Sclafani and Coble each had three RBIs.

At 8-4 this season, the Big Green are enjoying their best 12-game start to a season since opening the 1998 campaign with a 10-2 record.

Dartmouth will finish its 10-game trip to Florida with a contest tomorrow at noon against Grinnell.