Chance... Javier Mascherano makes a rare error by completely missing a throw from Claudio Bravo to allow Alexis Sanchez to run charge in on the Argentina goal. Pablo Zabaleta comes over to meet the Chile forward in teh box and does just enough to put him off, as his shot flies over the bar.

Ezequiel Lavezzi receives a bit of treatment off the pitch, possibly for cramp. Don't worry Ezequiel, you can have a nice long rest after this tournament. The domestic season doesn't start until.... oh.

There are few risks being taken now. Neither side is over-committing men forward for fear of being hit on the break. Unfortunately, it is resulting in hopeful long balls forward that are proving easy for the respective defences to mop up.

Chile's Marcelo Diaz twists and turns in the box to open up a shooting chance but fires his effort over the bar.

Gonzalo Higuain hasn't exactly covered himself in glory so far since coming on. Lionel Messi gives him space to run into with a flicked pass forward but the striker opts to pass and gets it horribly wrong, putting the ball way ahead of Ezequiel Lavezzi and out of play for a goal-kick.

Angelo Henriquez comes on for tournament top-scorer Eduardo Vargas. Henriquez is a Manchester United player but has yet to make an appearance for them. A winner would be a fine way to make a name for himself.

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Argentina substitute Ever Banega is booked for a heavy foul in the middle of the pitch. That is the seventh man into the book. More cards than chances in this game.

The first attack of added time comes from Chile, with Alexis Sanchez twisting and turning before setting up Jean Beausejour, but his cross is straight to Sergio Romero.

Extra-time is under way.

The best two chances of the game came in the last quarter. But Alexis Sanchez and Gonzalo Higuain were unable to convert. It means another half an hour for either of these sides to find something special. You suspect it is going to require this to find a winner before a shoot-out.

Great chance to win it! Lionel Messi charges forward and it is three on three. Ezequiel Lavezzi receives the ball out wide and crosses low to the far post but despite a diving effort, Gonzalo Higuain can only steer his shot from two yards out the wrong side of the post. The Copa America was there to be won. Instead we're going to have 30 extra minutes.

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Lionel Messi swings a free-kick into the box but it lands right into the bread basket of his Barcelona team-mate Claudio Bravo.

Ezequiel Lavezzi fell in the box as he looked to try and reach the ball and called for a penalty but the referee either didn't see the Chile defender's arms all over him or didn't think it serious enough to warrant a spot-kick. To be fair, it is a brave official who gives a 90th-minute penalty against the home side in this stadium.

There will be plenty of nervous people in that stadium right now. The home flags continue to wave, possibly to prevent the owner chewing their fingers to the bone. A goal now would surely be a winning one.

Booking number six goes to Chile's Charles Aranguiz for a lunging tackle in the middle of the pitch.

The ball is in the net courtesy of Ezequiel Lavezzi's flicked finish, but the Argentine substitute was offside from Lionel Messi's ball over the top.

Marcos Rojo could be in trouble here. The Argentina defender already been booked and has just slid right through Mauricio Isla. It was a wild tackle. He is very lucky, though, as the referee doesn't see fit to show a second yellow.

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Great effort from Alexis Sanchez! the ball is floated over the top to the Arsenal man in the box and he turns to volley a shot just past the far post.