Brazil Serie A wrap: Atletico stun leaders Fluminense
Fluminense went into Saturday's match with a two-point advantage ahead of Atletico Mineiro on the Brazil Serie A table but the second-placed outfit could jump into top position with two games in hand.
The hosts were without key trio Fred, Deco and Wager and it showed as Abel Braga's side suffered their first loss in 12 league fixtures.
Defender Diego Giaretta opened the scoring for Atletico GO in the 18th minute before Renie doubled the visitors' lead with half-time fast approaching.
Substitute Michael pulled a goal back for Fluminense just past the hour mark but it proved nothing more than a consolation.
Despite claiming their first win since August 20, Atletico GO remains at the foot of the table on 20 points, seven adrift of safety.
Meanwhile, Sao Paulo ended a four-game winless run with a 3-1 victory over Portuguesa.
Paris Saint Germain-bound midfielder Lucas Moura played an influential role in the triumph, setting up two goals in the second half.
Osvaldo broke the deadlock for the hosts inside six minutes but Portuguesa's Bruno Mineiro levelled proceedings on 37 minutes.
However, Sao Paulo defender Cortez restored their lead on 57 minutes before ex-Sevilla striker Luis Fabiano, who has been named in Brazil's squad to face Argentina on September 19, capped his national team recall with a 78th-minute strike to seal the win.