PORTLAND, Maine — The Portland Sea Dogs won their first series of the season, taking the third game over the New Britain Rock Cats on Wednesday 7-5 at Hadlock Field.

Playing at a special 11 a.m. start and wearing uniforms that all sported the number 42 for Jackie Robinson Day, the Sea Dogs posted a season high with seven runs and tied a season high with 10 hits.

Henry Ramos, Reed Gragnani, and Jonathan Roof each finished the game with two hits for Portland. Kevin Heller, making his second start of the season, added three RBIs.

After New Britain took a 1-0 lead in the top of the first on an RBI double by Tommy

Murphy, the Sea Dogs tied it up in the third on Heller’s sacrifice fly. Portland then scored two runs in each of the fourth, fifth and sixth innings to extend their lead to 7-2 after six.

Sea Dogs starter Justin Haley went four innings and allowed one earned run on five hits while walking two and striking out six. Jonathan Aro (2-0) picked up his second win of the season, pitching three innings in relief and allowed one earned run on two hits while walking two and striking out six.

A day after Sea Dogs pitchers combined to strike out 10 Rock Cats, they set a season high with 14 strikeouts in Wednesday’s outing. Dayan Diaz picked up his first save of the season after entering the game in the bottom of the ninth with the tying runs on base and two outs and striking out Jayson Langfels.