The Costa Rican national team celebrates after defeating Greece in a penalty shootout during a World Cup game in Recife, Brazil, on Sunday, June 29. This elimination round game ended with a final score of 1-1. Costa Rica pulled out a win in a penalty kick shootout with a score of 5-3.
(CNN) -- Who would have thought it? Team Brazil just scraping by in a cliffhanger penalty kick shootout.
But from here on out, where every game means somebody's going home, there's a 12th man on the field, a true equalizer -- roaring determination.
Brazil into the World Cup quarterfinals
Colombia knocks Uruguay out of World Cup
Who to watch for in the World Cup
And it nearly snatched victory for Chile.
But Brazil's dream of winning a World Cup on its own soil has survived.
It meets Colombia in the quarterfinals after it sent Uruguay home to join striker Luis Suarez, whom FIFA suspended for biting an Italian player last week.
That may have cost Uruguay the game, but at the same time, Colombia has hit the World Cup like a whirlwind, and fans are swooning for their stand-out midfielder James Rodriguez. He has shot half of Colombia's total 10 goals in the tournament so far.
Newby fans of Team USA soccer who left the television on over the weekend instead of waiting for America's faceoff with Belgium on Tuesday, must certainly have caught footy fever from Saturday's exhilarating matches.
More to come, in the Round of 16 knockout matches -- see viewing times and channels below. Also included: a nice treat at bottom. Here's what to watch for:
1. Hangovers
They may be epidemic in Brazil after the celebration parties. Three factors are at work here:
A. It was a Saturday night.
B. Brazil won.
C. Duh, it's Brazil during World Cup.
But Brazil fans have a lot of time to recover from the party, since Brazil doesn't play again until Friday. If they win that quarterfinal match against Colombia, get ready of a repeat of last night.
In the meantime, fans can take in two games on Sunday while vegging in front of the TV.
2. Offense vs. Defense
Netherlands vs. Mexico, noon ET Sunday, ESPN and Univision
The Dutch players could easily be mistaken for a road repair crew if they wear their hunter-orange jerseys on Sunday. But the color should be taken seriously as a symbol of how on fire they are.
They have shot the most goals in group play at this year's World Cup -- 10, topping Germany and Brazil, which had seven each.
They dominated their group, roundly stomping reigning world champ Spain 5-1 in their first game.
But offense isn't everything, as Mexico's team will attest. They practically put a brick wall in front of their goal during group play, allowing just one ball to get in. They held Brazil to a 0-0 tie.
All they need to do now is score more. Javier Hernandez might just have it in him. He's been quite a goal-getter in the past.
And Dutch fans certainly make an impression parading down Brazil's streets in those bright jerseys.
3. Feels like the first time
Costa Rica vs. Greece, 4 p.m. ET Sunday, ESPN and Univision
They've never met before, FIFA says. Not once. And at the World Cup, this is only Costa Rica's third appearance, and only Greece's second.
Costa Rica has shot twice as many goals so far as Greece, while allowing only one and putting away major contenders Italy and Uruguay.
Sound like Greece is the underdog? FIFA ranks the team 12th in the world and Costa Rica 28th.
4. Line-dance craze
Colombia has not only won each of its games so far, it has also won the hearts of millions of fans.
The spirit of the team's play, the scoring surge by Rodriguez. But crowds also love Colombia's signature celebration group dance. If Colombia continues its winning streak, it may catch on.
Watch for it in a disco near you.
Click the pic to play!
5. Monday reality checks
What betting odds would you give on these Round of 16 matches coming up Monday?
* First, France vs. Nigeria. France has won a previous World Cup title, has shot eight goals in group play and is currently ranked 17 in the world. Nigeria has shot only three goals in the tournament and is ranked 44th.
* Second, Germany vs. Algeria. Germany has three previous World Cup titles and is ranked 2nd globally behind Spain, which lost in group play -- making Germany the top team left in this year's cup. Algeria has never won a World Cup title, has only even participated three times and is ranked 22nd globally.
Com'on. Pony up that those odds. No? Already know you're in for a surprise, eh?
You're right. France has yet to beat Nigeria. They've met once before, and Nigeria won. And -- saving the best for last -- Germany has lost to Algeria both times they went toe-to-toe. Algeria has four goals from those two meets to Germany's one.
But Germans believe in their team and are gearing up for them to go all the way. It has spawned a flurry of homemade online music videos, each one worse than the next -- all in good fun.
The real fave seems to be by 15-year-old Fritz, a singer without finesse but full of gawky charm, braces and all.
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Michael Umana of Costa Rica shoots and scores a penalty kick to defeat Greece.
Theofanis Gekas of Greece walks away after having his shot blocked by Costa Rica's goalkeeper in a penalty shootout.
Greece's Jose Holebas runs to kick a cross during extra time before the penalty shootout.
Greece's Sokratis Papastathopoulos, on the ground, celebrates with teammates after scoring his team's equalizing goal against Costa Rica.
Jose Holebas of Greece, left, vies with Yeltsin Tejeda of Costa Rica for the ball.
Oscar Duarte of Costa Rica walks off the pitch after being shown a red card, taking the Costa Rican team down to 10 men against Greece.
Costa Rica's captain, Bryan Ruiz, celebrates after scoring a goal.
Referee Benjamin Williams gives a yellow card to Costa Rica's Oscar Esteban Granados on the sideline.
Greece's Jose Holebas jumps over Costa Rica's Joel Campbell.
Konstantinos Manolas of Greece challenges Joel Campbell of Costa Rica.
Greece's Dimitris Salpingidis eyes the ball.
Georgios Samaras of Greece controls the ball against Oscar Duarte of Costa Rica.
Cristian Gamboa of Costa Rica tackles Lazaros Christodoulopoulos of Greece.
Costa Rica's captain Bryan Ruiz, center, competes for the ball with Greece's Andreas Samaris, left, and Greece's Giannis Maniatis.
Yeltsin Tejeda, left, and Cristian Gamboa, right, of Costa Rica defend against Lazaros Christodoulopoulos of Greece.
Costa Rica's Giancarlo Gonzalez heads the ball to a teammate.
Joel Campbell of Costa Rica, center, dribbles past Konstantinos Manolas of Greece.
A Costa Rica fan enjoys the atmosphere of Pernambuco Arena in Recife, Brazil, before the game between Costa Rica and Greece.
Greek fans cheer before the start of the game.
Klaas-Jan Huntelaar of the Netherlands celebrates scoring his team's second goal on a penalty kick near the end of the game against Mexico in Fortaleza, Brazil.
Mexico's captain, Rafael Marquez, is shown a yellow card by referee Pedro Proenca Oliveira Alves Garcia, which led to Huntelaar's penalty kick.
Mexico's Hector Herrera vies for the ball with Netherlands' Stefan de Vrij.
Wesley Sneijder of the Netherlands shoots and scores his team's first goal.
Netherlands' goalkeeper Jasper Cillessen fails to make a save as Mexico's Giovani dos Santos scores the first goal of the game.
Memphis Depay of the Netherlands and Javier Aquino of Mexico compete for the ball.
Francisco Rodriguez, left, and Oribe Peralta, second right, of Mexico take a three-minute cooling break allowed for both teams by the referee during the 30th and 75th minutes of the game.
Arjen Robben of the Netherlands vies for the ball with Francisco Rodriguez, center, and Hector Moreno of Mexico.
Stefan de Vrij of the Netherlands, in orange, challenges Oribe Peralta of Mexico for the ball during a World Cup game between the two nations in Fortaleza, Brazil, on Sunday, June 29.
Ron Vlaar of the Netherlands tackles Hector Herrera of Mexico.
Netherlands forward Robin van Persie pulls the jersey of Mexico's captain Rafael Marquez.
Mexico's Hector Moreno, center, is challenged by Ron Vlaar, left, and Nigel de Jong of the Netherlands.
Arjen Robben of the Netherlands is challenged by Hector Moreno, left, and Francisco Javier Rodriguez of Mexico.
Arjen Robben of the Netherlands, right, is challenged by Paul Aguilar of Mexico.
Fans of the Netherlands cheer at Castelao Stadium in Fortaleza, Brazil, before the game.
Mexican supporters cheer for their team before the game. 
