Who are the key players in World Cup 2010? Cristiano Ronaldo or Lionel Messi? Kaka or Wayne Rooney? Are they able to influence and define the fate of their teams?

Let's see a list of the top players in this World Cup and how they can affect their teams.

1. Lionel Messi Argentina: Messi is something like the Messiah of Argentina. He is considered the best pound for pound player right now and one of the key players in World Cup 2010. He is just 22 and he has won pretty much everything in his career with his clubs. The only thing he hasn't won yet is a World Cup trophy with Argentina. Is this his year? Maradona named Messi his successor in the Argentinean Team.

2. Cristiano Ronaldo Portugal. When Manchester United bought him 6 years ago, he was expected to become the leader of the team. He became more than that, outdoing all the legends of the team until then. Cristiano has been severely criticized because he doesn't seem to play his best games when playing with his national team. Is this about to change? What is certain is that Ronaldo definitely wants to achieve something major with Portugal, so we just need to see what he can do against some serious opponents.

3. Wayne Rooney England: Wayne Rooney broke through internationally when he was just 18 years old and became an indispensable part of the English offense next to major strikers. Rooney is considered the bad guy in the fields, however, he is ready to "kill" any opponent whenever needed. A player to watch and definitely one of the key players in World Cup 2010.

4. Kaka Brazil: Kaka is one of the top stars of the Brazilian Team. He comes from a middle class family in Brazil, which is quite rare for a football player in this country. Kaka belongs to Real Madrid but he never chased money. He is the mastermind of the Brazilian team, one of the best organizers and smart players in the field. He is not as fast as he used to be due to some injuries, but he is a world class player with a lethal counterattack.

5. Xavi Spain: Everybody is saying that Spain is the best team this year. If you read the roster of the team it's easy to figure out why. Xavi is one of the players every team would like to have. He is a midfielder with great organizational skills, ability to read the game and become a leader when needed. His short passes are considered infallible and he is considered one of the key players in World Cup 2010 for his team.

Who is the player that will manage to lead his country and his team to the final of the World Cup? We will soon find out, but what is most important is that these key players in World Cup 2010 are ready to give their best and create memorable moments for us spectators.