Lagos spent his entire career with the Minnesota Thunder, scoring the team's first goal in 1990. The Thunder were created by Lagos' father Buzz in 1990 as an unaffiliated amateur team. The Thunder played their first game against the professional Winnipeg Fury of the Canadian Soccer League. Lagos scored the first goal of the game, a 2–1 victory for the Thunder. In 1994, the Thunder turned professional with the USISL. When Lagos retired in 2001, he was the last surviving member of the original team. He was inducted into the Thunder Hall of Fame in 2002.