PORTLAND — The Sea Dogs used a five-run third inning and a solid start from Luis Diaz to take the series finale over the New Hampshire Fisher Cats, 7-3, in front of a sellout crowd on Wednesday night at Hadlock Field.

Trailing 2-0 entering the third, Tim Roberson put Portland on the board with an RBI double to halve the Fisher Cats’ lead. After Oscar Tejeda walked to load the bases, Dustin Lawley worked a two-out walk from Scott Barnes to force in the tying run. Luis Martinez then cleared the bases on an 0-2 pitch that smacked off the wall in right-center to give Portland a 5-2 lead it wouldn’t relinquish. The Sea Dogs sent all nine men to the plate in the third and scored five runs on three hits – including four of the runs with two outs.

Luis Diaz earned his second victory of the season and his first since July 6 at Binghamton. Diaz allowed three runs (one earned) on three hits in 5 1/3 innings, walking four and striking out six. Heri Quevedo picked up a save by working the final 3 2/3 innings and keeping the Fisher Cats scoreless.

The Sea Dogs padded their lead with two runs in the fifth inning on RBI singles by Tzu-Wei Lin and Sam Travis. Lin, Travis, Roberson, Lawley and Martinez each had two hits for Portland.

The Sea Dogs head to New Britain today for a game against the Rock Cats, with first pitch scheduled for 7:05 p.m. Mike McCarthy (6-7, 4.32 ERA) goes for Portland against Harrison Musgrave (1-3, 2.87) for New Britain.