The comparison is entirely unfair, but Mauricio Dubon is putting up Mookie Betts-type numbers with the Portland Sea Dogs.

Dubon, 22, went 3 for 4 with a home run, RBI double and single Thursday night to lead Portland to a 4-3 win over the Trenton Thunder at Hadlock Field.

Betts was 21 when he began the 2014 season in Portland. He batted .355 with 18 doubles, three triples and six home runs in 54 games before his promotion to Triple-A.

Dubon, in 52 games with the Sea Dogs since his promotion from Class A Salem, is batting .337 with 17 doubles, six triples and five home runs.

“He’s been money since Day 1,” said Manager Carlos Febles, who also managed Dubon in Salem last year. “He’s a thousand-times better hitter than what I saw last year (.274).

“He stays back (with the bat) and his hands are working pretty good. The ball jumps off his bat. He’s been impressive.”

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Dubon doesn’t receive much hype, playing in the shadow of Boston’s stellar young players (including Betts), but he’s having a breakout year.

“I’m just keeping things simple,” Dubon said. “Last year I tried (quick fixes) when I struggled. Now when I go 0 for 4 I try to learn from it … And I’m definitely stronger from last year. I worked out a lot in the offseason and it’s paying off.”

Dubon’s double off reliever Caleb Smith (2-5) scored Tzu-Wei Lin to break a 3-3 tie in the seventh. Earlier he swatted a curveball over the left-field wall off Trenton starter Ronald Herrera.

Sea Dogs starter Mitch Atkins (5-7) struck out 10 and took over the Eastern League lead with 132, allowing three runs on seven hits over seven innings.

Luis Ysla allowed a walk and single in the ninth but escaped for his third save.

Nate Freiman had two RBI for Portland (52-76), both on groundouts.

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Yoan Moncada (1 for 4) singled in the first and scored, also striking out twice.

Mark Payton’s two-run homer and Dustin Fowler’s RBI triple produced the runs for Trenton (81-50).

NOTES: Lin, normally a middle infielder, played the outfield for only the second time. … The announced paid attendance was 5,072. … One of those fans was Mike Davis of Falmouth, who was the Sea Dogs’ 9-millionth fan in the team’s 23rd season. … The Sea Dogs will announce their Hall of Fame inductees before Friday’s game. … Also, the first 1,000 fans will receive a Sea Dogs baseball card set. … The annual and popular Field of Dreams game is at 6 p.m. Saturday. Only 90 tickets remain. … Almost 600 tickets remain for Sunday’s 1 p.m. game, the final home game of the season.

In Eastern League news, league president Joe McEacharn announced that Hartford could lose its franchise if its stadium isn’t completed soon. The Hartford Yard Goats, formerly the New Britain Rock Cats, had to play on the road all year because of stadium construction delays and legal issues. McEacharn didn’t give an exact deadline for the stadium to be completed, nor specify where the Yard Goats would move if the stadium wasn’t ready.