Robinho Scores as Bolivar beat Santos in Copa Libertadores
The Brazilian champions struggled in the high altitude of La Paz but look to have secured a draw until the last 10 minutes when Bolivar secured maximum points.
Zermatten, an Argentine, opened the scoring in the first minute with a free kick that goalkeeper Juan Carlos Henao let slip into the net.
Santos' striker Deivid equalised at 1-1 in the 24th when he got into the area and fired off a shot that skidded into the net.
Zermatten retaliated with a searing cross from the left in the 52nd minute that put Bolivar up 2-1 before Deivid shot in the 56th to again level the score at 2-2.
Still on fire, Zermaten got off a left-footed winner to put Bolivar ahead 3-2 in the 85th minute.
A minute later, Bolivar made it 4-2 when Diego Cabrera snatched the ball from his Santos rivals and left two defenders in his footsteps as he fired off a goal from just outside the area.
In the 89th minute, desperately seeking to go away with at least a draw, Robinho broke free at high speed from the local defenders and added a last goal.
But last scoring attacks by both sides in the waning minutes left both sides on edge as they played out the remaining minutes on a cold, drizzly evening before 30,000 fans at the Hernando Siles Stadium.
The match was the opener in Group 2, which also includes Danubio of Uruguay and Liga Deportiva Universitaria of Quito, Ecuador.