Athletics - IAAF World Indoor Championships 2018 - Arena Birmingham, Birmingham, Britain - March 4, 2018 Aries Merritt of the U.S and Konstadinos Douvalidis of Greece in action during the Men's 60 metres Hurdles Semi-finals Action Images via Reuters/John Sibley

Athletics - IAAF World Indoor Championships 2018 - Arena Birmingham, Birmingham, Britain - March 3, 2018 Aries Merritt of the U.S. in action during the Men's 60m Hurdles Heat with Kuwait's Abdulaziz Al Mandeel and Greece's Konstadinos Douvalidis REUTERS/Phil Noble

Athletes (from top to bottom) Johnathan Cabral of Canada, Konstadinos Douvalidis of Greece, Pascal Martinot-Lagarde of France, Aries Merritt of the U.S., Omar McLeod of Jamaica, Xie Wenjun of China, Greggmar Swift of Barbados and Gregor Traber of Germany compete at the heat 2 of the men's 110 metres hurdles semi-final during the 15th IAAF World Championships at the National Stadium in Beijing, China, August 27, 2015. REUTERS/Pawel Kopczynski

(Top-bottom) Balazs Baji of Hungary, David Oliver of the U.S., Konstadinos Douvalidis of Greece and Joao Vitor de Oliveira compete during the men's 110 metres hurdles heats at the IAAF World Championships at the National Stadium in Beijing, China August 26, 2015. REUTERS/Pawel Kopczynski

Konstadinos Douvalidis (L) of Greece and Paolo Dal Molin of Italy clear hurdles in the men's 60 metres hurdles heats during the world indoor athletics championships at the Atakoy Athletics Arena in Istanbul March 10, 2012. REUTERS/Murad Sezer (TURKEY - Tags: SPORT ATHLETICS)

Konstadinos Douvalidis of Greece reacts as he did not complete in the men?s 60 metres hurdles heats during the world indoor athletics championships at the Atakoy Athletics Arena in Istanbul March 10, 2012. REUTERS/Dylan Martinez (TURKEY - Tags: SPORT ATHLETICS)

Greece's Konstadinos Douvalidis competes in the men's 110 metres hurdles heats at the 11th IAAF World Athletics Championship in Osaka August 29, 2007. REUTERS/David Gray (JAPAN)

Greece's Konstadinos Douvalidis (L-R), Terrence Trammell of the U.S. and Gregory Sedoc of the Netherlands compete in the men's 110 metres hurdles heats at the 11th IAAF World Athletics Championship in Osaka August 29, 2007. REUTERS/David Gray (JAPAN)