sentences:  Still in 1999, Guilherme signed with Clube Atlético Mineiro, where he experienced his best years as a professional.In the year's Série A, he was crowned top scorer by breaking the record which belonged to club legend Reinaldo, and led the team to the vice-championship.Guilherme played one year on loan with Sport Club Corinthians Paulista, scoring twice in his debut, a 3–2 home win against Sport Club Internacional.