When and where: The Olympic semifinal kicks-off from Old Trafford, Manchester, at 2.45 p.m. ET. Live coverage will be provided by the NBC Sports Network, with a live stream available on NBCOlympics.com.

Preview: Olympic gold-medal favorites Brazil continue their quest to win the one international honor to so far elude them as they take on South Korea in the semifinals on Tuesday.

The Selecao so nearly fell the same was as fellow-favorites Spain as they trailed twice to Honduras in the quarterfinals. It took Brazil's stunning attacking lineup to eventually send them through 3-2 after a dramatic contest.

The match encapsulated Brazil's tournament to date. For the fourth game running Mano Menezes' side struck three goals as the front four of Neymar, Oscar, Hulk and Leandro Damiao have lived up to their pre-tournament billing.

Damiao's form has been particularly impressive as he stakes a strong claim to be Brazil's center forward going heading into the World Cup on home soil in 2014. The Internacional star struck twice against Honduras to take his tally to four for the competition.

What has also proved true is the predicted weakness in Brazil's defense. Menezes surprised many by his decision not to select central defender David Luiz as one of his overage players, and the defense appears that it could do with someone of his undoubted ability. Brazil also suffered a blow with the loss of first-choice goalkeeper Rafael on the eve of the tournament.

There will be little room for errors against a well-organized South Korean side. After conceding just one goal in making their way through the group phase, South Korea continued their run with an upset victory over home nation Great Britain on penalties.

South Korea's progress earned much to a strong midfield shield led by Celtic's Ki Sung-Yueng. They will be fully tested, though, to try and halt the creativity and movement of Brazil's attacking threat. Going forward, Korea will need further strikes of the quality Sunderland striker Ji Dong-Won produced against Great Britain, while Arsenal forward Park Chu-Young will also be a pivotal.

Prediction: This promises to be Brazil's toughest test of the competition to date. Against a relentless and organized South Korean side, Brazil may not be able to rely on their phenomenal attack to dig them out of trouble as they did against Honduras.

South Korea will be looking to keep it tight at the back in the knowledge that there could well be opportunities for them to sneak a goal at the other end. There may be more than a few nerves for Brazil, but they should just have too much going forward for a resolute South Korean side.

Brazil 2-1 South Korea