MANCHESTER, N.H. — Graham Stoneburner spread nine hits over five innings of one-run ball, but the Thunder’s offense wasn’t able to back him.

Trenton managed just three hits off of old foe B.J. LaMura and a combination of two relievers in a 4-1 loss, the team’s second in three games.

After Stoneburner exited, Naoya Okamoto made his Eastern League debut, and it wasn’t very good.

The 27-year-old native of Japan whom the Yankees plucked from the Mexican League allowed two runs on two hits and two walks in just 1 2/3 innings. He handed the ball to Cory Arbiso with runners on second and third.

Arbiso stranded both runners, though by coaxing a flyout on the first pitch he threw.

Offensively, there obviously wasn’t much to report.

Ray Kruml had two of the Thunder’s three hits, and catcher Austin Romine had the other. Austin Krum, Brad Suttle, Cody Johnson Jack Rye and Kruml each drew walks in the loss.

Dellin Betances, one of the Yankees’ ballyhooed Killer B’s, makes his 2011 debut tomorrow in Trenton’s attempt to take a split in its first series.

Against Dunedin last year, the Blue Jays’ High-A affiliate and where most of the current Fisher Cats squad played last season, Betances was dominant.

In two starts spanning 12 innings, he blanked the D-Jays on just three hits. He also notched 15 punchouts over that time, and walked just two.