When the Eastern League All-Star Game is played in Portland on July 15, a handful of Binghamton Mets are expected to return to Hadlock Field.

They will feel right at home, like they did Wednesday night in a 3-1 victory over the Portland Sea Dogs. The Mets are 5-0 at Hadlock this year.

Binghamton jumped on Sea Dogs starter Heri Quevedo (0-3) for three runs in the first three innings, and the Mets’ pitching staff did the rest. Starter Luis Cessa (6-4) held the Sea Dogs to one run on five hits. Paul Sewald pitched a perfect ninth for his 11th save.

Carlos Asuaje paced Portland with a 1-for-3 night, with a walk and an RBI.

Outfield prospect Michael Conforto paced Binghamton with three hits.

Conforto, 22, may not be voted to the All-Star Game because he’s only played 16 games in Double-A. But he’s showing star quality, batting .375 since his call-up from the Class A Florida State League last month.

“It’s definitely a small sample size. But you know, it’s just baseball, and I try to come to the ballpark every day with that mindset,” said Conforto, ranked the Mets’ No. 4 prospect by milb.com. “I just try to keep things simple and keep my approach the same.”

The Mets picked Conforto in the first round (10th overall) of the 2014 draft out of Oregon State and signed him to a $3 million bonus.

“He’s a real good hitter,” Binghamton Manager Pedro Lopez said. “It’s a big jump from A ball to Double-A, but his approach allows him to execute his plan over and over.”

Conforto singled and scored in the first inning, then doubled in a run in the third to make it 3-0.

Quevedo, 25, continues to struggle since his call-up to Portland on June 4 from extended spring training. Quevedo, in his third year in the Red Sox organization, has a 9.58 ERA in three starts. He gave up five hits and three walks in three innings, striking out three. He needed 73 pitches (40 strikes).

Mike McCarthy relieved in the fourth and continued his hot streak with three innings of one-hit ball. Since McCarthy gave up seven runs in a horrible start May 15 in New Britain (22/3 innings), he has a 1.44 ERA over his last seven appearances (25 innings, four runs).

Miguel Celestino, just down from Pawtucket, allowed one hit over two innings. Jorge Marban pitched a 1-2-3 ninth.

Portland got its run in the third inning. Aneury Tavarez led off with a single up the middle, advanced to second on a wild pitch, to third on Marco Hernandez’s single and scored on Asuaje’s groundout.

Portland dropped to 25-40; the Mets improved to 34-30.

NOTES: The announced paid attendance was 3,717. … Thursday is the finale of this short three-game homestand. Fireworks are scheduled after the game. … William Cuevas, tied for fifth in the league with six wins, will start for the Dogs.