PORTLAND — The Portland Sea Dogs (15-7) offense came in averaging eight runs per game on the homestand. The 10 runs the ’Dogs scored in Tuesday’s 10-2 Eastern League win exceeded that average in a win over the Reading Fightin’ Phils at Hadlock Field.

The Sea Dogs jumped on Reading starter Mike Nesseth with two down in the first. Travis Shaw hit a single to left and Stefan Welch crushed a two-run homer into the Portland bullpen to plate the first two runs of the game.

Nesseth (0-1) settled down and retired the next five hitters in a row before he gave up a single to Mookie Betts in the third. The base hit extended his on-base streak to 51 straight regular season games and 56 straight overall.

The Sea Dogs went quietly in the rest of the third frame, but exploded for seven runs in the fourth. With one out Blake Swihart tripled to center field. Two batters later, Henry Ramos tripled home two runs to make for a 4-0 game and ending Nesseth’s night.

Ryan O’Sullivan took over for the starter and induced a groundball off the bat of Heiker Meneses before he walked Shannon Wilkerson. Betts was next and barreled a fastball into the netting above the Maine Monster for a three-run home run and 7- 0 Sea Dogs lead.

The seven-run fourth inning continued as Deven Marrero reached on an error, and Travis Shaw turned on an O’Sullivan pitch and drove a two-run home out of Hadlock Field and into Fitzpatrick Stadium to make it 9-0.

Portland starting pitcher Kevin Couch was perfect for 5.2 innings before Edgar Duran singled in the sixth. Couch (4-0) threw 102 pitches in seven innings for the win.

The Sea Dogs scored their 10th run in the sixth on an RBI double by Marrero to scored Betts.