I have to go here with the only Ecuadorian team to ever win Copa Libertadores, as they are in superb form, leading their local league and also leading their group in this competition.
A win here would put them 5 points ahead of tonight’s rival with only two games left to be played, one of them at home against the very weak Binacional next week, what means that if they can get the 3 points in this match they would be almost in the next round for sure.
As an additional factor, they have on their favour the always difficult for their rivals altitude of Quito where they are very strong (they beat River 3-0 back in March).
Things are not good at Sao Paulo, they barely got a draw at home last week vs River (and they were very lucky getting two own goals), their star Dani Alves will miss the game again due to a broken arm and there are also rumours that he wants to leave because fans have been very critical of his commitment with the team.