Joao Vieira 50km Marcha Athletics - World Athletics Championships - Doha 2019 - Men's 50 Kilometres Race Walk - Doha, Qatar - September 29, 2019 Portugal's Joao Vieira poses as he celebrates winning silver REUTERS/Aleksandra SzmigielAthletics - World Athletics Championships - Doha 2019 - Men's 50 Kilometres Race Walk - Doha, Qatar - September 29, 2019 Portugal's Joao Vieira poses as he celebrates winning silver REUTERS/Aleksandra Szmigiel