According to Globo Esporte Futebol, the pair underwent procedures at the Einstein Hospital Israelita in São Paulo on Wednesday. Domingos Duarte ruptured his anterior cruciate ligament in his right knee during last Saturday's match against Internacional, and is expected to miss the remainder of the season. Aurélio Buta, meanwhile, had surgery to correct a meniscus problem in his right knee and is likely to be out for six months after complaining of pain in recent weeks. The duo's absence has led to the signing of Pedro Lima, a right-back who played against Internacional. The São Paulo team will now focus on their upcoming match against Santos on Friday.