Sao Paulo and Argentine side Tigre drew 0-0 on Wednesday in the first-leg of the Copa Sudamericana final, which should give a slight edge to the Brazilians in the second leg in a week.
Sao Paulo, one of South America's most decorated clubs, had more possession but failed to break down the modest Argentine side, which is playing in its first international final.
The second leg of the final is Dec. 12 at Sao Paulo.
Both teams played with 10 men after Sao Paulo's Luis Fabiano and Tigre's Alejandro Donatti were shown red cards in the 15th minute by referee Antonio Arias.
Amid pushing and shoving, Fabiano - the former Porto and Sevilla forward - kicked out in the direction of Donatti, but television replays showed he missed. Donatti, after a slight delay, crumbled to the pitch and was sent off for diving.
The match was fast-paced at the start with Lucas threatening for Sao Paulo in the second minute, forcing Tigre keeper Damian Albil to make a diving save.
Sao Paulo had most of the...