Behind a goal and an assist from Jessica Mazo, St. Joseph High shut out Brien McMahon, 2-0, in the quarterfinals of the FCIAC girls soccer tournament on Thursday at the Dalling Sports Complex. The second-seeded Cadets (14-1-2) overcame a sluggish start, with Mazo setting up Maddie Fried for the game-winning goal with 6:16 left in the first half. \u201cI really thought for 20 minutes in the first half they were playing better than us,\u201d St. Joseph head coach Jack Nogueira said. \u201cOnce we scored the first goal, we weren\u2019t as nervous and we started playing a little bit better.\u201d Mazo then sealed the victory in the 52nd minute, converting a bobbled save attempt by Senator keeper Kayla Cocchia. Seventh-seeded McMahon (8-4-5) squandered a pair of scoring opportunities in the first half. After Cadet Julie DiCesare cleared a Senator shot off of keeper Grace Hickey\u2019s goal line, the Senators had a breakaway opportunity. At the 13:26 mark of the first half, Peyton McNamara raced through the midfield. She fought off the tackle attempt of Cadet defender Helen Mahoney, kept her feet, but hooked the shot wide of the frame. McMahon produced another quality chance with 34:18 left to play. Hailey Vechiarelli fouled Senator Viviana Luna just outside the 18-yard box, giving McNamara a direct kick out in front. St. Joseph lined up an eight-player wall, shrinking the target for McNamara \u2014 who drove the ball wide. \u201cToday was about we finished our opportunities,\u201d Nogueira said. \u201cThey had a couple of opportunities that they could\u2019ve finished, they didn\u2019t. \u201cWe found a way to win a game that was a very tough game for us. They made it tough for us, they defended\u2026 I\u2019m happy with the result.\u201d After Mazo doubled the St. Joseph margin with 28 minutes left, the Cadets were able to successfully see out the match and punch their tickets to the semifinals. In the final five minutes, St. Joseph wisely dribbled out wide to the corner flag, keeping the Senators hemmed to one side of the field. \u201cWe practice that,\u201d Nogueira said. \u201cWe\u2019re trying to stall the ball and be defensive. We want to make sure we don\u2019t get caught up in counters.\u201d That led to McMahon receiving a yellow card late, a culmination of the rugged play typical of a tournament setting. \u201cWe dealt with it well today,\u201d Nogueira said. \u201cIt\u2019s the FCIAC, every game is like this\u2026 We\u2019re not a physical team, we tend to not be as physical. It\u2019s something we have to deal with and we try to play through it.\u201d St. Joseph will face the winner of third-seeded Ridgfield and sixth-seeded Trumbull on Monday in the semifinals.