Paulo Sérgio Oliveira da Silva (19 October 1974 – 27 October 2004), better known as Serginho, was a Brazilian footballer who played as a defender.

Serginho started his career in the town of Coronel Fabriciano, Minas Gerais state, Brazil. He played for São Caetano as a defender, and was playing for his team in a Campeonato Brasileiro match against São Paulo on 27 October 2004 when he suffered a fatal cardiac arrest 60 minutes into the match. A later autopsy showed Serginho's heart to weigh 600 grams, twice the size of an average human heart.^{[citation needed]}. After a investigation, his team received a 24-points deduction but was not relegated, despite the loss of points. This was because São Caetano's staff let him play even knowing that he had heart problems, detected in the pre-season medical tests.

With São Caetano, Serginho won the 2nd division of Campeonato Paulista in 2000, and the first division in 2004, and was runner-up in two Campeonatos Brasileiros and one Copa Libertadores.

• List of association footballers who died while playing

• Serginho at Sambafoot (archived)

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