2012 Copa Libertadores first stage

The First Stage of the 2012 Copa Santander Libertadores de América ran from January 24 to February 2, 2012 (first legs: January 24–26; second legs: January 31–February 2).

Format
The twelve teams were drawn into six ties on November 25, 2011 in Asunción.

Teams played in two-legged ties on a home-away basis. Each team earned 3 points for a win, 1 point for a draw, and 0 points for a loss. The following criteria were used for breaking ties on points: The six winners advanced to the second stage to join the 26 automatic qualifiers.
 * 1) Goal difference
 * 2) Away goals
 * 3) Penalty shootout (no extra time is played)

Matches
Team 1 played the second leg at home.

Match G1
Arsenal won on points 4–1.

Match G2
Tied on points 3–3, Flamengo won on goal difference.

Match G3
Peñarol won on points 4–1.

Match G4
Tied on points 3–3, Libertad won on goal difference.

Match G5
Internacional won on points 4–1.

Match G6
Unión Española won on points 4–1.