BOWIE, Md. — Portland center fielder Dave Sappelt had a rough night.

Playing in his third game with the Sea Dogs, Sappelt made a baserunning goof and a defensive miscue.

He made amends in the 11th inning.

Sappelt hit a solo home run to left field off reliever Gene Escat to give the Sea Dogs a 4-3 win over the Bowie Baysox.

The win was Portland’s first over Bowie this season in five tries. It was also just the second win in nine games for Portland, which improved to 25-37. The Baysox (33-28) lost for just the fourth time in 12 games.

The heroics by Sappelt were necessary after Bowie scored two runs in the bottom of the ninth to tie the game 3-3.

Glynn Davis singled with runners on first and second and one out. The ball got past Portland left fielder Jonathan Roof to allow both runners to score. Davis was credited with an RBI against reliever Madison Younginer, who had retired his previous 20 batters.

Roof, who had two hits, left the game in the top of the 11th after he was hit by a pitch from Escat (1-2).

Roof began the Portland eighth with a single and went to second on a wild pitch by reliever Mychal Givens. Cole Sturgeon reached on a bunt single for his second hit, as the throw to first by Givens was late. Marco Hernandez (four hits) then smashed a double to left-center to drive in two runs.

The Sea Dogs got another run in the ninth to make it 3-1 when Sappelt scored on an RBI single by Roof.

Bowie took a 1-0 lead in the seventh on a sacrifice fly by Garabez Rosa. Bowie catcher David Freitas began the rally with one out when his line drive got past Sappelt in center field for a two-base error. Rosa then followed with his fly ball to right that was easily far enough to score Freitas with the first run of the game.

Bowie starter Joe Gunkel, facing his former team for the second time this month, allowed five hits and no runs with four strikeouts and a walk in seven innings.

Portland starter William Cuevas, in his second start against Bowie since June 7, allowed four hits, struck out eight and didn’t walk a batter in six innings.

Sappelt joined the Sea Dogs after he was signed by Boston out of the Mexican League.

With 95 games of big league experience with the Cubs and Reds, Sappelt is looking for a new start with the Red Sox.

“It is an amazing feeling. It is good to be back (in affiliated ball),” Sappelt said Friday. “I always felt I could play the game. I feel I can bring a lot the Red Sox organization.”

Now he just wants another shot at the majors.

“That is the goal,” said Sappelt, who had two hits and scored two runs.

Sappelt was thrown out trying to score from third on a single by Sturgeon in the fifth when Sappelt went back to third to tag up on the bloop single.

But Manager Billy McMillon said he brings experience and more to the Sea Dogs.

“He has some thump in his bat,” McMillon said.