Football teams can't just show up to the Summer Olympics. Even teams coming off Euro 2012 runs are introducing fresh faces and require a tune-up to play to their full potential.
This year is a bit different for Great Britain. The presence of five Welsh players gives this team a foreign infusion that we haven't seen in 50-odd years, but things are status quo for Brazil.
The Brazilian squad will bring a plethora of talented players to London, but first they must show their stuff in this exhibition game.
Let's take a look at three Brazilian players who will steal the show.
This Hulk isn't green, but he does destroy defenses. The Brazilian attacker is the most dynamic offensive presence for either side in this one, and he won't disappoint.
He uses his bulky 5'11'' frame to overpower defenders in their own end. He only has 13 career appearances for Brazil's national team, but he's scored three goals.
He plays his club ball with Serie A's Porto. Hulk has 52 goals in 96 appearances and is regarded as one of the league's most dangerous weapons.
Brazil has several players who can hurt you in the blink of an eye, but Hulk takes the cake. He's a lethal scorer because of his speed and strength in the open field.
Ganso is incredibly talented, but he's yet to really break out. He's only made eight appearances with Brazil's national team, and he's yet to score a goal.
The attacking midfielder plays his club ball with Santos, where he's scored 10 goals in 59 career games.
The Brazilian midfield is a solid blend of defensive prowess and supporting offensive players. Gonso is an excellent offensive talent who's just beginning to scratch the surface of his true ability.
Look for Ganso to turn some heads against Great Britain. At 22 years old, it's his time to break out.
No, I didn't deliberately choose three players who all go by only one name. It just worked out that way.
Juan is the centerpiece of Brazil's stingy defense. The 33-year-old center back has made 82 international appearances with Brazil, and his experience is a key element to their defensive tactics.
He's not incapable of offense. Juan's provided eight goals in his 82 appearances, and nine more in 117 club games with Serie A's Roma. If you give him space to attack, he can hurt you.
Brazil is known for their incredible skill level and dramatic flair. These three players will put on world-class displays in London and are part of the reason Brazil is a deserving favorite entering the Summer Olympics.