Latvia's Maris Strombergs bows after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING OLYMPICS TPX IMAGES OF THE DAY)

Gold medallist Latvia's Maris Strombergs, silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (2nd R) pose at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs, silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (R) pose at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs poses at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs, silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (R) pose at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs sings his national anthem as silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (R) look on at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS TPX IMAGES OF THE DAY)

Gold medallist Latvia's Maris Strombergs sings his national anthem as silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (R) look on at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs, silver medallist Australia's Sam Willoughby (L) and bronze medallist Colombia's Carlos Mario Oquendo Zabala (R) pose at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs poses at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs poses at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Gold medallist Latvia's Maris Strombergs gestures at the men's BMX victory ceremony during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/ (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs gestures after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs (L) and Australia's Sam Willoughby compete in the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs (L) and Australia's Sam Willoughby compete in the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs (front), Australia's Sam Willoughby, Colombia's Carlos Mario Oquendo Zabala (R) and Raymon van der Biezen (L) of the Netherlands compete in the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs gestures after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs gestures after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs bows after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs bows after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs stand under the finish line after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS TPX IMAGES OF THE DAY)

Latvia's Maris Strombergs, Australia's Sam Willoughby, Colombia's Carlos Mario Oquendo Zabala and Raymon van der Biezen of the Netherlands (front-back) come down the finish line during the men's BMX final during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs celebrates after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs celebrates after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS TPX IMAGES OF THE DAY)

Latvia's Maris Strombergs celebrates after winning the men's BMX event during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Stefano Rellandini (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Switzerland's Roger Rinderknecht, David Herman of the U.S., Colombia's Carlos Mario Oquendo Zabala and Latvia's Maris Strombergs (L-R) compete in the men's BMX semi-final run during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 10, 2012. REUTERS/Paul Hanna (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Twan van Gendt of the Netherlands, New Zealand's Marc Willers, Latvia's Maris Strombergs and Colombia's Carlos Mario Oquendo Zabala (L-4th L) compete in their men's BMX quarter-final run during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 9, 2012. REUTERS/Cathal McNaughton (BRITAIN - Tags: SPORT CYCLING SPORT OLYMPICS)

Latvia's Maris Strombergs competes in the men's BMX seeding run during the London 2012 Olympic Games at the BMX Track in the Olympic Park August 8, 2012. REUTERS/Cathal McNaughton (BRITAIN - Tags: SPORT CYCLING OLYMPICS)

Latvia's President Valdis Zatlers (L) and 2008 Beijing Olympic gold medallist BMX athlete Maris Strombergs pose during their meeting in Riga August 28, 2008. REUTERS/Ints Kalnins (LATVIA)

Latvia's President Valdis Zatlers (L) holds up the 2008 Beijing Olympic gold medal of BMX athlete Maris Strombergs as silver medallist at javelin throwing Ainars Kovals looks on during their meeting in Riga August 28, 2008. REUTERS/Ints Kalnins (LATVIA)

Latvia's President Valdis Zatlers (L) looks at the 2008 Beijing Olympic gold medal of BMX athlete Maris Strombergs during their meeting in Riga August 28, 2008. REUTERS/Ints Kalnins (LATVIA)

Maris Strombergs of Latvia races during the men's semifinal run for the BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)

Maris Strombergs of Latvia races during the men's semifinal run for the BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)

Silver medallist Mike Day (R) of the U.S., gold medallist Maris Strombergs (C) of Latvia and bronze medallist Donny Robinson (L) of the U.S. pose with their medals after the men's BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)

Ivo Lakucs of Latvia wears a shirt with a picture of his late father that reads as "love will never end" after his compatriot Maris Strombergs won the gold medal for the men's BMX cycling competition at the Beijing 2008 Olympic Games, August 22, 2008. REUTERS/Yves Herman (CHINA)

Gold medallist Maris Strombergs of Latvia races during the men's final run for the BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)

(L-R) Silver medallist Mike Day of the U.S., gold medallist Maris Strombergs of Latvia and bronze medallist Donny Robinson of the U.S. pose with their medals after the men's BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Yves Herman (CHINA)

Silver medallist Mike Day (L) of the U.S. celebrates as gold medallist Maris Strombergs of Latvia looks on after the men's BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Yves Herman (CHINA)

Gold medallist Maris Strombergs (front) of Latvia celebrates winning the men's final run for the BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Yves Herman (CHINA)

Gold medallist Maris Strombergs (L) of Latvia leads the pack of riders during the men's final run for the BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Yves Herman (CHINA)

Gold medallist Maris Strombergs of Latvia celebrates after winning the men's BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)

Gold medallist Maris Strombergs of Latvia celebrates after winning the men's BMX cycling competition at the Beijing 2008 Olympic Games August 22, 2008. REUTERS/Tim Wimborne (CHINA)