Brazil vs. South Korea in the men's soccer semi final at the London 2012 Olympic games takes place Tuesday. The football match kicks off at 2.45 p.m. ET and can be watched online through live stream (link provided below).

This semi final will be held at Old Trafford and will see Brazil try to win the one football accolade that they are still yet to win. However, they will have a well organized South Korean side to contend with who have proven they are not afraid to grind out a result when their backs are up against the wall.

Brazil had a shock in their quarter final match, going behind twice to Honduras. They twice had to fight back to equalize and eventually managed to turn the game in their favor, emerging as 3-2 eventual winners.

That quarter final was the fourth game in a row that Brazil have scored three goals, and they undoubtedly have the most devastating strike force at the Olympics.

However, it is Brazil's defense that has been a surprising weakness. David Luiz was not selected for the squad and that decision may come back to haunt Brazil manager Menezes. Brazil are also missing first choice goalkeeper Rafael due to injury to make their defense look even more shaky.

The efficiency of South Korea should not be underestimated. The side is well organized and has some flair players in too, and that should be enough to make some analysts wonder whether the Koreans can pull off a surprise win against Brazil and their on and off defense. South Korea did well to beat the hosts Great Britain on penalties in their quarter final, and they will be looking to continue their momentum and see if it can take them through to the final and the gold medal match.

Brazil vs. South Korea in the men's football semi finals will kick off at 2.45 p.m. ET and all the soccer action can be watched through live stream on NBC Olympics by clicking HERE.

Tags: olympics soccer london 2012 olympics