Fluminense beat Chapecoense 2-1 in the 26th round of the Brazilian Championship to remain in the top half of the league.
Fluminense opened the scoring 10 minutes into Monday's match with a goal from Everaldo and led 2-0 by half-time thanks to a marker by Junior Sornoza.
Chapecoense played with more intensity in the second half and forward Leandro Pereira scored in the 78th minute to cut the deficit to 2-1, but Douglas' expulsion two minutes later on a straight red card destroyed any chance of a comeback.
While Fluminense sit in 9th place, Chapecoense remain in the relegation zone with just 28 points.
Vasco da Gama, meanwhile, climbed out of the drop zone by winning 2-1 against Bahia to end a five-match skid of four losses and a draw.
The club earned all three points after Bahia starting goalkeeper Douglas Friedrich was sent off 30 minutes for a red card after a foul against striker Andres Lorenzo Rios.
Vasco has the same number of points as Chapecoense, but hold the 16th spot in the league on goal difference, trailing 15th-place Bahia by a point.