BOWIE, Md. — The Portland Sea Dogs blew a 6-0 lead and lost the opening game of a doubleheader with the Bowie Baysox 7-6 Tuesday night.

The Sea Dogs let another lead slip away in the second game as Bowie scored twice in the fifth inning for a 5-4 victory after Jeremy Hazelbaker had given Portland a 4-3 lead with a two-run homer in the top of the inning.

Portland starter Michael Lee gave up six hits and three earned runs in three innings.

Mark Wagner hit long home runs to left field in his first two at-bats off Bowie starter Mike Ballard as the Sea Dogs took a 6-0 lead in the opener, but Portland starter Alex Wilson gave up a three-run homer and the Sea Dogs’ bullpen faltered.

Cesar Izturis singled to right field against closer Blake Maxwell to drive in Pedro Florimon with the winning run in the eighth inning in a game scheduled for seven.

“A little bit, to say the least,” said Wagner when asked if it was frustrating to blow a 6-0 lead. “You have to find a way to stop the bleeding.”

It was the largest lead the Sea Dogs have given up in a loss this season.

“It is definitely one of the worst starts of the year for me, since I didn’t locate my fastball,” said Wilson, who was on a pitch count of about 75. “It was one of the games we should have won. It was just a battle all night.”

Wagner had one homer in 22 at-bats with the Sea Dogs before Tuesday’s games. He hit a solo homer with two outs in the first and added a two-run shot in the third on an off-speed pitch Ballard left hanging over the plate.

“It is nice to get some at-bats at this level,” said Wagner, called up July 22 from Class A Salem. “The first homer was on a fastball inside and the second one was on a hanging change-up.”

The Sea Dogs (45-63) added three runs in the third. Oscar Tejada drove in two with a single and Mitch Dening (two hits) drove in another with a double.

Wilson gave up a three-run homer to L.J. Hoes in the third that cut the lead to 6-3.

Wilson went four innings and allowed three earned runs. Left-hander Kyle Fernandes relieved him and got into a jam in the fifth before getting Hoes to ground into a double play and retiring Joe Mahoney on a ground ball back to the mound.

Fernandes gave up a two-run homer to Caleb Joseph in the sixth to make it 6-5. After a walk to Buck Britton, the Sea Dogs brought in Maxwell (3-3) from the bullpen with no outs.

He allowed a sacrifice and then gave up three straight walks, the last to Izturis forced in a run to make it 6-6. After a lineout to third by Hoes for the second out, Maxwell retired Mahoney on a grounder to second. 

NOTES: The Sea Dogs acquired three players Tuesday. Right-handed pitcher Josh Fields, who was dealt from the Seattle Mariners as part of Boston’s trade for pitcher Erik Bedard, and Drew Hedman, an infielder from Class A Greenville, were assigned to Portland. The Sea Dogs also recalled catcher Matt Spring from Class A Salem.