MEDELLIN, July 13 (Xinhua) -- Colombia under-23 international striker Miguel Borja scored twice as Atletico Nacional defeated nine-man Sao Paluo 2-1 to advance to the Copa Libertadores final on Wednesday.

Atletico Nacional, who won last week's first leg 2-0 in Sao Paulo, rallied from a goal down at their Atanasio Girardot stadium to win the last-four tie 4-1 on aggregate.

Argentine striker Jonathan Calleri gave the visitors a dream start by netting in the ninth minute but Borja equalized six minutes later.

Borja, expected to be a part of the Colombia squad at next month's Olympic Games in Rio de Janeiro, then sunk the Brazilian team's hopes with another goal 12 minutes from time.

Sao Paulo were forced to play the final 10 minutes with just nine men after Diego Lugano and Wesley were dismissed for unruly conduct.

Atletico Nacional are aiming to win Latin America's top club trophy for only a second time, 27 years after their first triumph.

The Colombian outfit will contest the decider against the winner of the other semifinal between six-time champions Boca Juniors of Argentina and Ecuador's Independiente del Valle.