MANCHESTER, New Hampshire — Dwight Smith Jr. broke a 1-1 tie with an RBI single in the sixth inning and the New Hampshire Fisher Cats defeated the Portland Sea Dogs 3-1 in an Eastern League baseball season finale Monday at Northeast Delta Dental Stadium.

The Sea Dogs took a 1-0 lead in the second inning on a sacrifice fly by Danny Bethea to score Cody Decker, who had doubled.

The Cats’ Emilio Guerrero tied the game with a solo homer to lead off the fifth inning on the first pitch by Taylor Grover (L, 2-5). Grover walked Jason Leblebijian to lead off the sixth before Smith delivered the game-winning RBI.

Ian Parmley extended the Fisher Cats lead on an RBI single in the seventh off of Ben Taylor.

Mike McCarthy made a spot start for Portland and pitched four scoreless innings, allowing two hits and one walk and hitting a batter.

Taylor Cole went three innings in the start for New Hampshire and allowed a run on three hits while walking one and striking out one. John Straka (W, 4-1) closed out the game with six innings of scoreless relief.

The Sea dogs, the Double-A affiliate of the Boston Red Sox, finished the season with a 55-84 record and in last place in the EL’s Eastern six-team division.