Since Flamengo came from a goal down to beat River Plate and win his first Copa Libertadores name since 30, gabriel Barbosa scored twice in a last five minutes.
The leaders were second best for much of the match after home swept to the joy of the River lovers in the Estadio Monumental at Lima from Matias Suarezs pull-back at the 14th minute.
The 24-year-old Cable was subsequently inches away from making it 2-0 with a sweet strike from 25 metres out.
In the space of a couple moments, Flamengos best chances came until the equaliser when Barbosa had a shot blocked and Everton Ribeiros follow up was well preserved by protagonist Franco Armani.
Then came the fightback. Barbosa timed his run to perfection to run in Bruno Henriques square ball from Inter Milan twisted and turned the defence at the penalty box.
There was still time to get 2 cards at the final seconds, with Exequiel Palacios shipped off to kicking Bruno Henrique while he was on the ground before the two-goal hero of Flamengo was sent off for applause.
South America club soccer competition, which started life in 1960s closing, has been moved to the city because of societal unrest in the capital of Chile.
This is the very first time since 1988 the tournament was decided at a one-off game.
Supporters from both sides occupied its roads in their tens of thousands before the game, with reports saying some River lovers jumped the 2,500 miles to Lima.
If they both reach the final 21 December flamengo have qualified for your 2019 Fifa Club World Cup at Qatar and could face European champions Liverpool.
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