Ronaldinho converted a late penalty to give Flamengo a 2-1 win over Duque de Caxias in a match in which goalkeeper Felipe had to leave the field in an ambulance after a collision with an opponent.
Felipe sustained a head trauma and was taken to a hospital for precautionary tests, but doctors said he was doing fine.
Former CSKA striker Vagner Love also scored for Flamengo, getting his fourth goal in as many matches.
Argentine striker German Herrera scored twice in Botafogo's 3-1 win over Volta Redonda, while Ecuador's Carlos Tenorio ruptured his Achilles tendon in Vasco da Gama's 2-0 win over Olaria on Saturday.
In Sao Paulo, Santos moved near the top of the standings by beating leader Corinthians 1-0 for its seventh win in a row.