Vianna assisted on Gustavo Silva's opening goal in the sixth minute before heading in a cross from Alvaro Nogales a minute later to give Fresno Pacific an early 2-0 lead.
The fourth-seeded Eagles then turned up the pressure, forcing Sunbirds goalkeeper Fabian Rangel to make three saves, including back-to-back stops on shots from Jesus Lires and Cesar Gonzalez. However the sequence sparked a Fresno Pacific counterattack and Islas converted the opportunity in the 25th minute. The senior forward added his second goal in the 43rd to kill off any hope of a comeback.
Trinity Lutheran finally broke through in the 84th minute when senior midfielder Carlos Camacho scored off a cross from Lires. Vianna completed the scoring with his second goal of the match from a free kick in the 89th.
Eagles' freshman goalkeeper Daniel Nadeau, a Shorewood High School graduate, made three saves as a substitute.
Trinity Lutheran finished the season with with a record of 13-7-1.
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