When and where: The Group B encounter at the 2012 London Olympics kicks-off from the City of Coventry Stadium at 9.30 a.m. ET. Coverage will be provided by Telemundo, with a live stream available on NBCOlympics.com.

Preview: Group B of the men's soccer preliminary rounds at the London Olympics was left on a knife-edge after two opening draws on Thursday, meaning that all four teams go into the second round of games knowing that a victory would put them firmly in the running for a place in the knockout phase.

Mexico began with a cagey goalless tie with Korea and will be looking for more firepower as they take on Olympic debutantes Gabon in Coventry on Sunday. The result was a disappointing one for El Tri after expectations had been raised following a strong performance in qualifying earlier this year and a first ever victory at the famed Toulon tournament just last month.

While Mexico were far from at their best, a draw was far from a disastrous result against an impressive Korean side. Failure to beat Gabon, however, and the appraisal will be far less kind. Given Mexico's struggles on Thursday, coach Luis Fernando Tena will surely be tempted to start with Giovani dos Santos. The 23-year-old only appeared as a substitute against Korea but could help get the best out of Marco Fabian, the forward who scored seven times in Toulon.

While Mexico were left underwhelmed by an opening draw, the same result will have produced a very different reaction from Gabon. The West Africans surprised many with a 1-1 draw against a highly-fancied Switzerland side that should give all connected with the squad belief that they could cause a further shock and progress past the preliminary round.

Claude Mbourounot's side will again be looking to Saint-Etienne striker Pierre Aubameyang, who got Gabon's historic first Olympic goal to equalize late in the first half against the Swiss. The 23-year-old was one of the stars as Gabon hosted and reached the last eight of this year's Africa Cup of Nations.

Prediction: Gabon should provide Mexico with a real obstacle as El Tri look to get a vital three points. With Dos Santos likely to come into the lineup, Mexico should have too much firepower, although it could well be close right until the end.

Mexico 2-1 Gabon