Paul Costa found the back of the net with 9.5 seconds remaining in the first half to give the Trumbull High boys soccer team a 1-0 lead. The Eagles poured it on in the second half to leave St. Joseph High’s Dalling Complex with a 4-0 victory on Tuesday.

“We wanted to keep pounding and something good will happen,” Trumbull head coach Sebastian Gangemi said. “In the second half, they lost momentum and we gained momentum.”

Costa’s go-ahead goal came off a rebound after a long delay following a pair of Cadets drew yellow cards for arguing with officials.

“It was a decent first half,” St. Joseph head coach Steve Waizenegger said. “We broke down late — that shouldn’t happen — and that was the game.”

Trumbull’s Chris Lancia’s left-footed boot off an assist from Elvis Rodriguez took the score to 2-0 at the 30:20 mark of the second half.

Jason Weinstein got free to slot home Trumbull’s third goal at 11:20, with Jeremiah Caraballo earning the assist.

Arin Lara scored on Trumbull’s next possession to complete the scoring in the 70th minute.

“We wanted to survive the first ten minutes, then the first fifteen,” Gangemi said. “We wanted to keep the ball away from our backs.”

The Eagles midfielders did just that, pressing every pass behind Thang Dao, Eric Neil, Lancia, T.J. Coughlin, Rodriguez.

Goalie Jonathan Campbell was well defended, with Daniel Russo, Costa, Harrison Crosley and Caraballo.

Max Neary, Coughlin, Matt Restrepo, Noah Warren and Lara looked to get inside the St. Joseph defense of Brendan Derleth, Frank Perez, Dante Alberti and Jake Krasznai

Cadet midfielders’ Brandon Rua, Christian Barroso, Anthony Leonardi, Joe LaFrenierre and Nick Harper didn’t make that easy, especially in the first 40 minutes.

St. Joseph had the game’s first corner in the opening minute, but Krasznai’s header was wide.

The Cadets had trouble getting the ball to the feet of, or over the top to, talented strikers Matthew Reis and Sawyer Meehan.

“They are really dangerous with Reis,” Gangemi said. “We wanted to keep him at bay and I thought we did a good job there.”

Joseph Lucy, Cadet keeper, made three good saves in the first 10 minutes, the best at 31:19 when he took the ball out of the air with Brendan Clyons perched in front.

Perez had consecutive tackles to stop an Eagle rush in the 15th minute.

Down 2-0, St. Joseph challenged with Leonardi finding Reis, but his shot was smothered by Costa. The Cadets pressed on, but Russo cleared the ball before Meehan could get his foot on it.

Right before the third Trumbull goal, Lucy made a great save on Neil, after the senior took a crossing pass from Weinstein.

“Trumbull is a good team, and we expected that,” Waizenegger said. “What we didn’t expect was to get beat to fifty-fifty balls.

“It is only one game, but they came with a purpose. We had a game plan, but didn’t execute it. This was a shell of the team that tied Greenwich. We have Ludlowe Thursday. We have to play everyone once. This is gut-check time.”