New Hampshire Fisher Cats prospect Nate Pearson was impressive in his Double-A debut.

Pearson, a first-round draft pick of the Blue Jays in 2017, pitched five shutout innings, allowing two singles, in the Fisher Cats' 4-2 loss to the Sea Dogs on Tuesday night at Hadlock Field in Portland. The 22-year-old right-hander walked none and struck out eight.

The Sea Dogs overcame a 2-0 deficit with three runs in the sixth inning. Bobby Dalbec's two-run triple was the key blow.

Three Portland pitchers held the Fisher Cats to four singles, two by Chad Spanberger.

Red Sox second baseman Dustin Pedroia, on a rehab assignment with Portland, was in Tuesday's lineup before being scratched.

The teams play again tonight at 6 p.m. before finishing the series on Thursday at 11 a.m.