Brazil's midfielder Kaka (R) clashes with Chile's midfielder Arturo Vidal (L) during the 2010 World Cup round-of-16 football match between Brazil and Chile on June 28, 2010 at Ellis Park stadium in Johannesburg.

Slovakia's defender Radoslav Zabavnik (R) falls over Netherlands' midfielder Nigel de Jong during the 2010 World Cup round of 16 football match Netherlands versus Slovakia on June 28, 2010 at Moses Mabhida Stadium in Durban.

Gonzalo Higuain of Argentina is tackled by Carlos Salcido of Mexico during the 2010 FIFA World Cup South Africa Round of Sixteen match between Argentina and Mexico at Soccer City Stadium on June 27, 2010 in Johannesburg, South Africa.

Wayne Rooney of England is tackled by Arne Friedrich of Germany during the 2010 FIFA World Cup South Africa Round of Sixteen match between Germany and England at Free State Stadium on June 27, 2010 in Bloemfontein, South Africa.

 Benny Feilhaber of the United States goes to ground under a challenge from Kwadwo Asamoah of Ghana during the 2010 FIFA World Cup South Africa Round of Sixteen match between USA and Ghana at Royal Bafokeng Stadium on June 26, 2010 in Rustenburg, South Africa.

Lee Chung-Yong of South Korea catches Diego Perez of Uruguay in the chest with his boot during the 2010 FIFA World Cup South Africa Round of Sixteen match between Uruguay and South Korea at Nelson Mandela Bay Stadium on June 26, 2010 in Nelson Mandela Bay/Port Elizabeth, South Africa.

Spain's Andres Iniesta, left, competes for the ball with Chile's Mauricio Isla, right, during their World Cup Group H match at the Loftus Versfeld Stadium in Pretoria, South Africa on Friday, June 25.

Chile's Marco Estrada, left, and Spain's Sergio Busquets compete for the ball during their World Cup Group H match at the Loftus Versfeld Stadium in Pretoria, South Africa on Friday, June 25.

Brazil's Gilberto Silva, right, competes for the ball with Portugal's Cristiano Ronaldo, left, during the World Cup group G soccer match between Portugal and Brazil at the stadium in Durban, South Africa, Friday, June 25, 2010.

Erik Jendrisek (C) of Slovakia is challenged by Gennaro Gattuso of Italy during the 2010 FIFA World Cup South Africa Group F match between Slovakia and Italy at Ellis Park Stadium on June 24, 2010 in Johannesburg, South Africa.

Denmark's striker Dennis Rommedahl (R) is challenged for the ball by Japan's midfielder Daisuke Matsui (L) and Japan's defender Yuto Nagatomo during the Group E first round 2010 World Cup football match Denmark vs. Japan on June 24, 2010 at Royal Bafokeng stadium in Rustenburg.

Jermain Defoe of England tackles Robert Koren of Slovenia during the 2010 FIFA World Cup South Africa Group C match between Slovenia and England at the Nelson Mandela Bay Stadium on June 23, 2010 in Port Elizabeth, South Africa.

Serbia's midfielder Milan Jovanovic (C) is being tackled by Australia's defender Michael Beauchamp (R) leading to a yellow card for Beauchamp during the Group D first round 2010 World Cup football match Australia vs Serbia on June 23, 2010 at Mbombela Stadium in Nelspruit.

Zdravko Kuzmanovic of Serbia is closed down by David Carney and Lucas Neill of Australia during the 2010 FIFA World Cup South Africa Group D match between Australia and Serbia at Mbombela Stadium on June 23, 2010 in Nelspruit, South Africa.

Andre Ayew of Ghana tangles with Per Mertesacker of Germany during the 2010 FIFA World Cup South Africa Group D match between Ghana and Germany at Soccer City Stadium on June 23, 2010 in Johannesburg, South Africa.

Argentina defender Clemente Rodriguez goes flying after a tackle by Greece defender Lukas Vyntra.

Argentina striker Lionel Messi is tackled by Greece defender Socrates Papastathopoulos.

Honduras' striker David Suazo (L) falls with Spain's defender Gerard Pique as they fight for the ball.

Honduras' defender Osman Chavez challenges Spain's striker David Villa (R) as he kicks the ball to score against Honduras during the 2010 World Cup group H first round football match between Spain and Honduras.

Ivory Coast's midfielder Didier Zokora (up) falls over Brazil's midfielder Elano.

Brazil's midfielder Kaka (R) vies with Ivory Coast's player.

Italy's midfielder Daniele De Rossi (R) and New Zealand's defender Winston Reid lie injured on the pitch after clashing together during the match.

Italy's striker Alberto Gilardino (C) vies with New Zealand's defender Ivan Vicelich (5) during their match.

Italy's midfielder Simone Pepe (L) hits New Zealand's defender Winston Reid with his knee during the match.

Paraguay's striker Lucas Barrios (L) fights for the ball with Slovakia's defender Kornel Salata during the Group F first round 2010 World Cup football match Slovakia versus Paraguay on June 20, 2010 at Free State Stadium in Mangaung/Bloemfontein.

Ghana's striker Asamoah Gyan (R) falls over Australia's defender Lucas Neill during the Group D first round 2010 World Cup football match Ghana vs. Australia on June 19, 2010 at Royal Bafokeng stadium in Rustenburg. NO PUSH TO MOBILE / MOBILE USE SOLELY WITHIN EDITORIAL ARTICLE -

Ghana's midfielder Kwadwo Asamoah is tackled by Australia's defender Luke Wilkshire during the Group D first round 2010 World Cup football match Ghana vs Australia on June 19, 2010 at Royal Bafokeng stadium in Rustenburg. NO PUSH TO MOBILE / MOBILE USE SOLELY WITHIN EDITORIAL ARTICLE -

Ghana's defender Hans Sarpei (L) tackles Australia's striker Harry Kewell during the Group D first round 2010 World Cup football match Ghana vs. Australia on June 19, 2010 at Royal Bafokeng stadium in Rustenburg. NO PUSH TO MOBILE / MOBILE USE SOLELY WITHIN EDITORIAL ARTICLE

Yoshito Okubo of Japan tackles Robin Van Persie of the Netherlands during the 2010 FIFA World Cup South Africa Group E match between Netherlands and Japan at Durban Stadium on June 19, 2010 in Durban, South Africa.

Yuichi Komano of Japan is tackled by Rafael Van der Vaart of the Netherlands during the 2010 FIFA World Cup South Africa Group E match between Netherlands and Japan at Durban Stadium on June 19, 2010 in Durban, South Africa.

Japan's striker Yasuhito Okubo (16) vies with Netherlands' midfielder Wesley Sneijder (10), Netherlands' midfielder Nigel de Jong (8) and Netherlands' defender John Heitinga (3) during their Group E first round 2010 World Cup football match on June 19, 2010 at Moses Mabhida stadium in Durban.

Gareth Barry of England tackles Hassan Yebda of Algeria during the 2010 FIFA World Cup South Africa Group C match between England and Algeria at Green Point Stadium on June 18, 2010 in Cape Town, South Africa.

Gareth Barry of England jumps over the tackle by Ryad Boudebouz of Algeria during the 2010 FIFA World Cup South Africa Group C match between England and Algeria at Green Point Stadium on June 18, 2010 in Cape Town, South Africa.

Algeria's midfielder Karim Matmour (front) holds his leg after being tackled by England's striker Emile Heskey during the Group C first round 2010 World Cup football match England vs. Algeria on June 18, 2010 at Green Point stadium in Cape Town.

Thomas Mueller of Germany attempts an overhead kick as Nikola Zigic of Serbia tries to clear the ball during the 2010 FIFA World Cup South Africa Group D match between Germany and Serbia at Nelson Mandela Bay Stadium on June 18, 2010 in Port Elizabeth, South Africa.

France's Bacary Sagna (2) competes for the ball with Mexico's Carlos Salcido during Mexico's 2-0 win in their Group A match at Peter Mokaba Stadium in Polokwane, South Africa.
 

Alexandros Tziolis of Greece tackles Kalu Uche of Nigeria during the 2010 FIFA World Cup South Africa Group B match between Greece and Nigeria at the Free State Stadium on June 17, 2010 in Mangaung/Bloemfontein, South Africa.

Argentina's midfielder Javier Mascherano (R) vies with South Korea's striker Ahn Jung-Hwan during to Group B first round 2010 World Cup football match on June 17, 2010 at Soccer City stadium in Soweto, suburban Johannesburg.

David Villa of Spain is tackled by Diego Benaglio of Switzerland during the 2010 FIFA World Cup South Africa Group H match between Spain and Switzerland at Durban Stadium on June 16, 2010 in Durban, South Africa.

Portugal's Bruno Alves, right, competes for the ball with Ivory Coast's Aruna Dindane, back, during the World Cup group G soccer match between Ivory Coast and Portugal at Nelson Mandela Bay Stadium in Port Elizabeth, South Africa, Tuesday, June 15, 2010.

Italy's defender Giorgio Chiellini (R) challenges Paraguay's defender Aureliano Torres during their 2010 World Cup group F first round.

Cameroon's striker Eric Choupo-Moting (up) lands on Japan's defender Yuichi Komano during their Group E first round 2010 World Cup football match on June 14, 2010 at Free State stadium in Mangaung/Bloemfontein.

Keisuke Honda of Japan challenges Pierre Webo of Cameroon during the 2010 FIFA World Cup South Africa Group E match between Japan and Cameroon at the Free State Stadium on June 14, 2010 in Mangaung/Bloemfontein, South Africa.
 

Denmark's midfielder Martin Joergensen (L) is tackled by Netherlands' midfielder Nigel de Jong (front R) during the Group E first round 2010 World Cup football match Netherlands vs. Denmark on June 14, 2010 at Soccer City stadium in Soweto, suburban Johannesburg.

Netherlands' striker Dirk Kuyt fights for the ball with Denmark's midfielder William Kvist during the Group E first round 2010 World Cup football match Netherlands vs Denmark on June 14, 2010 at Soccer City stadium in Soweto, suburban Johannesburg.

Netherlands' striker Robin van Persie (L) gets a yellow card from French referee Stephane Lannoy during the Group E first round 2010 World Cup football match Netherlands vs Denmark on June 14, 2010 at Soccer City stadium in Soweto, suburban Johannesburg.

Abdelkader Ghezzal of Algeria is shown a red card for a second bookable offence by Referee Carlos Batres during the 2010 FIFA World Cup South Africa Group C match between Algeria and Slovenia at the Peter Mokaba Stadium on June 13, 2010 in Polokwane, South Africa.

Algeria's Abdelkader Ghezzal, foreground, reacts as he is given a red card by referee Carlos Batres Gonzalez, from Guatemala, during the World Cup group C soccer match between Algeria and Slovenia at Peter Mokaba Stadium in Polokwane, South Africa, Sunday, June 13, 2010.
 

Argentinian referee Hector Baldassi (R) gives a yellow card to Serbia's striker Nikola Zigic during the Group D first round 2010 World Cup football match Serbia vs Ghana on June 13, 2010 at Loftus Verfeld stadium in Tshwane/Pretoria.

Referee Marco Rodriguez awards Tim Cahill (4) of Australia a straight red card following a tackle on Bastian Schweinsteiger of Germany during the Germans' 4-0 win in their Group D match in Durban, South Africa.

USA goalkeeper Tim Howard (R) grimaces after a clash with England's striker Emile Heskey.
 

Uruguay's striker Sebastian Abreu (L) speaks to Japanese referee Yuichi Nishimura as he shows the red card to his teammate Nicolas Lodeiro (not seen) during the 2010 World Cup group A first round football match against France on June 11, 2010 at Green Point Stadium in Cape Town.