Cassi Barbato scored 21 points and Trumbull played with a lead throughout to win on the road at Stamford, 46-41.
It was the Eagles’ second straight win on the road against a league contender.
“Our girls came focused after a big win Friday against Staples,” Trumbull coach Steve Tobitsch said. “They did a great job. “It was a good road win, two back to back road wins against top 10 teams. We have a lot more improving to do but definitely trending in right direction.
Trumbull (9-2, 6-1 FCIAC) used a 13-0 run to take a 26-18 halftime lead. The Black Knights (8-2, 5-2) chipped away and got within a basket on several occasions but Trumbull was able to hold on down the stretch.
Emma Gentry scored 10 points for Trumbull.
The Black Knights were led by Megan Landsiedel, who finished with 15 points. Jess Nelson and Breanna Jacobs added eight points apiece.
“Our ability to rotate back on defense was a key,” Tobitsch said. “It wasn’t pressure or turnovers but making it difficult for them.”