Juninho, who transferred from Qarabag to Flamengo in the winter, made his debut at the Club World Cup held in the USA.
Idman.biz reports that the 28-year-old Brazilian footballer entered the field in the 82nd minute of the match against Los Angeles.
Juninho remained on the bench in Flamengo's first two matches in Group D against Esperance and Chelsea.
The former Qarabag player's team will face Bayern in the 1/8 finals.
It should be noted that Juninho, who has appeared in only two of Flamengo's last six games in all tournaments, last scored a goal on April 4 in Venezuela in the Libertadores Cup match against Deportivo Tachira.
Idman.biz