PORTLAND — Peter Hissey launched a three-run home run with one out in the 11th inning to give the Portland Sea Dogs (46-57) a 7-4 Eastern League walk-off win over the Trenton Thunder (59- 42) Monday night at Hadlock Field.

In 23 meetings with the Thunder this season, this is just the Sea Dogs’ sixth victory. However, Portland improved to 10-3 since the All- Star break.

Trenton reliever Craig Heyer (2-4) surrendered a oneout single to Bryce Brentz and issued a walk to Dan Butler, setting the stage for Hissey, who belted his first home run of the season.

Will Latimer (2-3) earned the win, tossing a scoreless 11th inning.

Down 1-0 in the home half of the first inning, Portland’s Jackie Bradley Jr. and Jeremy Hazelbaker, the Eastern League Player of the Week, launched back-to-back home runs for a 2-1 Sea Dogs lead.

Neil Medchill hit a home run for Trenton to give the Thunder a 3-2 lead in the fourth, but Portland again answered as Vidal Nuno worked a bases-loaded walk to tie the game.

Portland reliever Brock Huntzinger stranded the bases loaded in the eighth inning to keep the game even, and the Sea Dogs had a chance to win the game in the ninth, but left the bases full.

Trenton had its best opportunity in the top of the 11th, putting runners on second and third with nobody out, but David Adams lined to shortstop, leading to a doubleplay as the Sea Dogs escaped the inning unscathed.

Sea Dog relievers Caleb Clay, Huntzinger and Latimer combined to toss five innings of shutout relief.

Game two of the threegame series is tonight at 7 p.m., with Portland sending Stolmy Pimentel (3-4, 5.00 ERA) to the mound against Trenton’s Shaeffer Hall (8-6, 3.42). World Wrestling Entertainment Hall of Famer Sergeant Slaughter will be appearing at tonight’s game and will be signing autographs.

Tickets are available by calling the Sea Dogs’ ticket office at 879-9500, or online at www.seadogs.com