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Vialli embarked on his journey with Sampdoria in 1984, making a significant impact on the team's success. He played a pivotal role as a striker, contributing to their triumph in the 1990-91 Serie A championship, the 1988-89 Coppa Italia triumph, and the 1989-90 European Cup Winners' Cup victory. Vialli's exceptional skills and leadership on the field solidified his status as a beloved icon among Sampdoria fans.