If Monday was Jackie Robinson Day in the Majors, then Tuesday was “Andrew Bergeson Day” at Aiken Field.

Astoria’s senior left-hander pitched the Fishermen to an 11-1 win over Seaside, in the first of two Clatsop Clash meetings this week. The two teams play again Thursday at Broadway Field.

In Tuesday’s win, Bergeson pitched all five innings, allowing three hits and a walk with four strikeouts.

If that wasn’t enough, he helped himself at the plate with two hits and five runs batted in, which included a three-run home run in the bottom of the fifth to end the game via the 10-run mercy rule.

“Andrew had a real good outing, and we played real tight defense behind him,” said Astoria coach Dave Gasser. “(The Gulls) put the ball in play – we just played really well.

“I know Seaside will be tough at their place Thursday,” he added. “They have a good, solid team, and we’ll start 0-0 again. They’re a solid club, and well-coached.”

Bergeson finished off the Gulls in 69 pitches (45 strikes, 24 balls). He threw just five pitches in the first inning to set the tone.

Bergeson also drove in the first run, as Nick Strange reached base on a bunt to lead off the bottom of the first inning, then scored on an infield grounder by Bergeson. Cody Fox scored moments later on a fielder’s choice grounder from Frankie Leonardi.

Astoria’s Tony Rudolfi led off the bottom of the second with a solo homer, and the Fishermen tacked on two runs in the third (run-scoring singles by Taylor Holthusen and Carter Wallace), two more in the fourth and three in the fifth.

Seaside scored its lone run in the third, as Danny Leary sprinted home on a sacrifice fly from Jake Strozzi. Kyle Hague and Justin White each had a double for Seaside.

Astoria played errorless ball defensively, and turned a 5-4-3 double play to end the top of the fourth inning.

“That was stuff that we were not doing earlier in the year,” Gasser said. “I think we have guys where they need to be now. And I like the way we’re playing. I like that guys are recognizing situations, they’re able to anticipate better, and they’re getting more and more confident that they have the skill set to perform.”