Athletics - Diamond League - Doha - Qatar Sports Club, Doha, Qatar - May 4, 2018 South Africa's Godfrey Khotso Mokoena in action during the men's triple jump REUTERS/Ibraheem Al Omari 

Athletics - IAAF World Indoor Championships 2018 - Arena Birmingham, Birmingham, Britain - March 2, 2018 South Africa's Godfrey Khotso Mokoena in action during the Men's Long Jump Final REUTERS/Hannah McKay 

Athletics - IAAF World Indoor Championships 2018 - Arena Birmingham, Birmingham, Britain - March 2, 2018 South Africa's Godfrey Khotso Mokoena in action during the Men's Long Jump Final REUTERS/Hannah McKay 

Godfrey Khotso Mokoena of South Africa competes in the men's triple jump final at the 15th IAAF World Championships at the National Stadium in Beijing, China, August 27, 2015. REUTERS/David Gray

Godfrey Khotso Mokoena of South Africa competes in the men's triple jump final at the 15th IAAF World Championships at the National Stadium in Beijing, China, August 27, 2015. REUTERS/Phil Noble TPX IMAGES OF THE DAY 

Godfrey Khotso Mokoena of South Africa competes in the men's triple jump final at the 15th IAAF World Championships at the National Stadium in Beijing, China, August 27, 2015. REUTERS/Kim Kyung-Hoon

Godfrey Khotso Mokoena of South Africa competes in the men's triple jump qualifying round during the 15th IAAF World Championships at the National Stadium in Beijing, China, August 26, 2015. REUTERS/Phil Noble

Godfrey Khotso Mokoena of South Africa competes in the men's triple jump qualifying round during the 15th IAAF World Championships at the National Stadium in Beijing, China, August 26, 2015. REUTERS/Phil Noble

Athletics - IAAF Diamond League 2015 - Sainsbury's Anniversary Games - Queen Elizabeth Olympic Park, London, England - 25/7/15
USA's Godfrey Khotso Mokoena in action during the Men's Long Jump
Reuters / Phil Noble

Khotso Mokoena of South Africa celebrates after winning the men's triple jump final at the 2014 Commonwealth Games in Glasgow, Scotland, August 2, 2014. REUTERS/Suzanne Plunkett (BRITAIN - Tags: SPORT ATHLETICS)

Khotso Mokoena reacts during the men's triple jump final at the 2014 Commonwealth Games in Glasgow, Scotland, August 2, 2014. REUTERS/Phil Noble (BRITAIN - Tags: SPORT ATHLETICS)

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow August 16, 2013. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final during the London 2012 Olympic Games at the Olympic Stadium August 4, 2012. REUTERS/Phil Noble (BRITAIN - Tags: SPORT ATHLETICS OLYMPICS)

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final at the London 2012 Olympic Games at the Olympic Stadium August 4, 2012. REUTERS/Phil Noble (BRITAIN - Tags: SPORT ATHLETICS OLYMPICS)

South Africa's Godfrey Khotso Mokoena competes in the men's long jump qualification during the London 2012 Olympic Games at the Olympic Stadium August 3, 2012. REUTERS/Phil Noble (BRITAIN - Tags: OLYMPICS SPORT ATHLETICS)

South Africa's Godfrey Khotso Mokoena competes during his men's long jump qualification at the London 2012 Olympic Games at the Olympic Stadium August 3, 2012. REUTERS/Reinhard Krause (BRITAIN - Tags: OLYMPICS SPORT ATHLETICS)

Godfrey Khotso Mokoena of South Africa competes in the men's long jump qualifying event at the IAAF World Championships in Daegu September 1, 2011. REUTERS/Pawel Kopczynski (SOUTH KOREA - Tags: SPORT ATHLETICS)

Godfrey Khotso Mokoena of South Africa competes in the men's long jump qualifying event at the IAAF World Championships in Daegu September 1, 2011. REUTERS/Pawel Kopczynski (SOUTH KOREA - Tags: SPORT ATHLETICS)

Godfrey Khotso Mokoena of South Africa competes during the men's long jump qualifying event at the IAAF World Championships in Daegu September 1, 2011. REUTERS/Pawel Kopczynski (SOUTH KOREA - Tags: SPORT ATHLETICS)

South African athletes Khotso Mokoena (L), Caster Semenya (2nd L) and Mbulaeni Mulaudzi (R) show off their medals to President Jacob Zuma at the presidential guest house in Pretoria August 25, 2009. Semenya, whose victory has been overshadowed by a gender testing row, returned home to a heroine's welcome on Tuesday. Furious South Africans have accused the International Association of Athletics Federations (IAAF) of everything from racism to imperialism for ordering the test after her rapid improvement over the last year raised its suspicions. REUTERS/Siphiwe Sibeko (SOUTH AFRICA SPORT ATHLETICS) 

South African athletes (L-R), Khotso Mokoena, Caster Semenya and Mbulaeni Mulaudzi pose with their medals after meeting President Jacob Zuma at the presidential guest house in Pretoria August 25 ,2009. Semenya, whose victory has been overshadowed by a gender testing row, returned home to a heroine's welcome on Tuesday. Furious South Africans have accused the International Association of Athletics Federations (IAAF) of everything from racism to imperialism for ordering the test after her rapid improvement over the last year raised its suspicions. REUTERS/Siphiwe Sibeko (SOUTH AFRICA SPORT ATHLETICS) 

(Front L-R) Kai Long and Julia-Vanessa Long, the grandson and granddaughter of Luz Long former German long jump athlete of 1936, IAAF President Lamine Diack and granddaughter of former U.S. athlete Jesse Owen Marlene Dortch, pose in front of (L-R) Godfrey Khotso Mokoena of South Africa, Dwight Phillips of the U.S.,Mitchell Watt of Australia as they display their medals during the awards ceremony for the men's long jump at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. Dwight Phillips of the U.S. won the gold, ahead of vwho won silver and Mitchell Watt of Australia who won bronze. REUTERS/Wolfgang Rattay (GERMANY) 

Godfrey Khotso Mokoena of South Africa, Dwight Phillips of the U.S.,Mitchell Watt of Australia (L-R) display their medals during the awards ceremony for the men's long jump at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. Dwight Phillips of the U.S. won the gold, ahead of vwho won silver and Mitchell Watt of Australia who won bronze. REUTERS/Wolfgang Rattay (GERMANY) 

Godfrey Khotso Mokoena of South Africa, Dwight Phillips of the U.S.,Mitchell Watt of Australia (L-R) display their medals during the awards ceremony for the men's long jump at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. Dwight Phillips of the U.S. won the gold, ahead of vwho won silver and Mitchell Watt of Australia who won bronze. REUTERS/Wolfgang Rattay (GERMANY) 

Godfrey Khotso Mokoena of South Africa, Dwight Phillips of the U.S.,Mitchell Watt of Australia (L-R) display their medals during the awards ceremony for the men's long jump at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. Dwight Phillips of the U.S. won the gold, ahead of vwho won silver and Mitchell Watt of Australia who won bronze. REUTERS/Wolfgang Rattay (GERMANY) 

Godfrey Khotso Mokoena of South Africa, Dwight Phillips of the U.S.,Mitchell Watt of Australia (L-R) display their medals during the awards ceremony for the men's long jump at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. Dwight Phillips of the U.S. won the gold, ahead of vwho won silver and Mitchell Watt of Australia who won bronze. REUTERS/Wolfgang Rattay (GERMANY) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final at the world athletics championship at the Olympic stadium in Berlin August 22, 2009. REUTERS/Wolfgang Rattay (GERMANY) 

Dwight Phillips of the U.S. (L) embraces Godfrey Khotso Mokoena of South Africa after the men's long jump final during the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Dominic Ebenbichler (GERMANY SPORT ATHLETICS) 

Godfrey Khotso Mokoena of South Africa celebrates after winning silver in the men's long jump final during the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Dominic Ebenbichler (GERMANY SPORT ATHLETICS) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final during the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Dominic Ebenbichler (GERMANY SPORT ATHLETICS) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Max Rossi (GERMANY) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Dominic Ebenbichler (GERMANY) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Max Rossi (GERMANY) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump final at the world athletics championships at the Olympic stadium in Berlin August 22, 2009. REUTERS/Pawel Kopczynski (GERMANY) 

Men's long jump silver medallist Khotso Mokoena of South Africa poses during the medals ceremony of the athletics competition of the Beijing 2008 Olympic Games at the National Stadium August 19, 2008. REUTERS/Wolfgang Rattay (CHINA)

Men's long jump silver medallist Khotso Mokoena of South Africa poses during the medals ceremony of the athletics competition of the Beijing 2008 Olympic Games at the National Stadium August 19, 2008. REUTERS/Wolfgang Rattay (CHINA) 

Men's long jump silver medallist Khotso Mokoena of South Africa poses during the medals ceremony of the athletics competition of the Beijing 2008 Olympic Games at the National Stadium August 19, 2008. REUTERS/Mike Blake (CHINA) 

Men's long jump medallists (L-R) Ibrahim Camejo of Cuba (bronze), Irving Jahir Saladino Aranda of Panama (gold) and Khotso Mokoena of South Africa (silver) pose during the medals ceremony of the athletics competition of the Beijing 2008 Olympic Games at the National Stadium August 19, 2008. REUTERS/Mike Blake (CHINA) 

Men's long jump medallists (L-R) Ibrahim Camejo of Cuba (bronze), Irving Jahir Saladino Aranda of Panama (gold) and Khotso Mokoena of South Africa (silver) pose during the medals ceremony of the athletics competition of the Beijing 2008 Olympic Games at the National Stadium August 19, 2008. REUTERS/Mike Blake (CHINA) 

Khotso Mokoena of South Africa competes in the men's long jump final of the athletics competition in the National Stadium at the Beijing 2008 Olympic Games August 18, 2008. REUTERS/Ruben Sprich (CHINA)

Khotso Mokoena of South Africa reacts after competing in the men's long jump final of the athletics competition in the National Stadium at the Beijing 2008 Olympic Games August 18, 2008. REUTERS/Ruben Sprich (CHINA) 

Godfrey Khotso Mokoena of South Africa poses with his medals after winning in the men's long jump final at the 12th IAAF World Indoor Athletics Championship in Valencia March 8, 2008. Reuters/Albert Gea (SPAIN) 

Britain's Christopher Tomlision, Godfrey Khotso Mokoena of South Africa and Mohammed Salman Al Khuwalidi of South Arabia (L-R) pose with their medals during the award ceremony for the men's long jump at the 12th IAAF World Indoor Athletics Championship in Valencia March 8, 2008. Mokoena won the gold medal, Tomlision took silver and Al Khuwalidi won bronze. Reuters/Albert Gea (SPAIN) 

South Africa's Godfrey Khotso Mokoena competes to win the men's long jump final at the 12th IAAF World Indoor Athletics Championship in Valencia March 8, 2008. REUTERS/Eric Gaillard (SPAIN) 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump event at the IAAF 5th World Athletics Final 2007 in Stuttgart, September 23, 2007. REUTERS/Kai Pfaffenbach (GERMANY) 

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final at the 11th IAAF World Athletics Championship in Osaka August 30, 2007. REUTERS/Kai Pfaffenbach (JAPAN SPORT ATHLETICS) BEST QUALITY AVAILABLE 

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final at the 11th IAAF World Athletics Championship in Osaka August 30, 2007. REUTERS/Ruben Sprich (JAPAN) 

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final at the 11th IAAF World Athletics Championship in Osaka August 30, 2007. REUTERS/Kai Pfaffenbach (JAPAN) 

South Africa's Godfrey Khotso Mokoena competes in the men's long jump final at the 11th IAAF World Athletics Championship in Osaka August 30, 2007. REUTERS/Kai Pfaffenbach (JAPAN)
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South Africa's Godfrey Khotso Mokoena competes in the men's long jump heats at the 11th IAAF World Athletics Championship in Osaka August 29, 2007. REUTERS/Ruben Sprich (JAPAN) 

England's gold medallist Phillips Idowu, South Africa's silver medallist Khotso Mokoena (L) and Australia's bronze medallist Alwyn Jones (R) smile at the medal ceremony for the men's triple jump final at the Commonwealth Games in Melbourne March 25, 2006. REUTERS/Luis Enrique Ascui 

South Africa's Khotso Mokoena competes in the men's long jump qualifying heats at the Commonwealth Games in Melbourne March 21, 2006. REUTERS/Andy Clark 

South Africa's Khotso Mokoena competes in the men's long jump qualifying heats at the Commonwealth Games in Melbourne March 21, 2006. REUTERS/Andy Clark 

Godfrey Khotso Mokoena of South Africa competes in the men's long jump at the world athletics championships in Helsinki August 12, 2005. REUTERS/Michael Dalder AA/TC