Boca and Corinthians all square

A late goal by young forward Romarinho saw Corinthians level after Boca was on the brink of winning in Buenos Aires having taken the lead through Facundo Roncaglia.

Corinthians midfielder Paulinho made Agustin Orion work early on as the goalkeeper turned a powerful shot out for a corner in the seventh minute.

Corinthians coach Tite was forced to replace injured forward Jorge Henrique with Liedson six minutes before half-time and Boca struggled to get to grips with him.

But in the 73rd minute Boca took the lead.

After a corner kick by Pablo Mouche from the left, Santiago Silva's header struck the post, via the hand of Corinthians defender Chicao.

The ball rebounded to defender Roncaglia, though, who crashe in the rebound to delight the home fans.

Ten minutes later, Romarinho came on for Danilo to add some speed to the Corinthians attack.

On 85 minutes Paulinho stole the ball off Juan Roman Riquelme and passed it to Emerson, who then played in Romarinho.

The 21-year-old beat Orion with a deft little chip, his first involvement in the game, to equalise and silence the Boca fans.

Boca had the last opportunity to win the game in injury time, but a Lucas Viatri header hit the bar.

"I am very happy to have helped the team. Tite told me to play close to the sides and use my speed," Romarinho told Fox Sports.

"We are happy because we were the away side, we were down and managed to equalise."

"It's a shame, but we are fine, we know there are 90 minutes left," he said.

"We tried to win the game from the first minute. We took the initiative and we'll try to do so in Brazil.

"We could have won it and maybe we are a little bit angry about that."

The return match will be played at the Estadio Pacaembu in Sao Paulo next week. The away-goals rule is not used at this stage.

"We drew because of the big star we have in the squad (Romarinho), but we know we did not play the way we can," Corinthians's Alex said.

"We need to play much better if we want to win the title. Boca are a very tough team."

Boca is aiming for a seventh Copa Libertadores title, while Corinthians is playing in its first final.