Fernandinho netted a late winner as Atletico Mineiro dealt a surprise 1-0 defeat to runaway Campeonato Brasileiro leaders Cruzeiro.
The visitors could have extended their advantage to 13 points with a victory but Fernandinho's strike four minutes from time ensured they suffered their fifth defeat of the season.
Botafogo went second, level on points with third-placed Gremio, as they came from behind to beat Flamengo 2-1.
Hernane put Flamengo ahead in the 13th minute but Gege levelled three minutes before the break and Rafael Marques struck the winner just after the hour mark.
Marcelo scored the only goal in the third minute to help Atletico Paranaense keep pace with the chasing pack by beating Portuguesa 1-0.
Wellington Paulista struck from the spot to give Criciuma the lead for the third and final time in a 3-2 win over Vasco da Gama.
Paulista opened the scoring in the 17th minute then, after Marlone (20) levelled, Lins made it 2-1 in the 24th minute.
Andre's penalty five minutes into the second period levelled it up again, but Paulista replied four minutes later, and Willie's 62nd-minute dismissal killed off and hope of a comeback for the visitors.
First-half goals from Hugo (five), Walter (32) and Eduardo Sasha (39) gave Goias a 3-1 win over Bahia.
William Barbio pulled one back in the 68th minute for Bahia, who played the last 35 minutes with 10 men after Neto was sent off.
Andres D'Alessandro, Otavinho, Willians and Kleber netted in Internacional's 4-1 victory over Nautico Recife, while Sao Paulo v Corinthians was goalless.
On Saturday, Gremio blew the chance to make ground on Cruzeiro as 10-man Fluminense nicked a last-gasp 1-1 draw.
Gremio appeared to be on their way to victory when Matheus Bressanelli opened the scoring in the 38th minute and the hosts had Biro Biro dismissed 17 minutes from time.
Rafael Sobis struck in the dying seconds though to rescue a point for Flu.
Dinei struck the winner with 20 minutes remaining as Vitoria claimed a 2-1 win over Coritiba.
Geraldo had levelled for the visitors on the stroke of half-time following Vitoria's 12th-minute opener from Marquinhos.
Goals from Everton Costa (45) and Walter Montillo (69) saw Santos beat Ponte Preta 2-1.
Santos got a scare late on when Cicinho (86) was sent off and Rafael Ratao pulled one back in the closing moments but they held on.