Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Mehmet Tunc of Turkey and guide Bugra Han Kocabeyoglu in a men's 100 metre T11 heat Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Margarita Fuandez of Mexico with her guide Francisco Munoz at the end of a women's 1500 metre T11 heat Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 A runner's prosthetic leg Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Great Britain's Kieran Tscherniawsky in action during the men's shot put F33 Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 14, 2017 India's Rinku in action during the Men's Javelin Throw F46 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Latvia's Diana Dadzite celebrates gold in the Women's Shot Put F55 alongside third placed Rosa Cazares Guerrero (R) of Mexico and second placed Erica Maria Castano Salazar (L) of Spain Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Samantha Kinghorn of Great Britain after winning the women's 200 metre T53 with a new world record time Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 China's Hongjie Chen in action during the Men's High Jump T47 Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 14, 2017 Hannah Cockroft of Great Britain celebrates after winning gold in the women's 100 metre T34 final Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Ananias Shikongo of Namibia during a men's 100 metre T11 heat Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Hollie Arnold of Great Britain in the women's Javelin F46 final Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Romania's Florin Cojoc in action during the Men's High Jump T47 Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Great Britain's Richard Whitehead in action during the Men's 200m T42 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Mauritius' Jason Louis Denovan Rabaye goes down injured at the end of the Men's 400m T20 Heat 2/2 Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 14, 2017 Great Britain's Kylie Grimes in action during the Women's Club Throw F51 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Japan's Maya Nakanishi in action during the Women's Long Jump T44 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 14, 2017 Great Britan's Gemma Prescott in action during the Women's Club throw F32 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Louzanne Coetzee of South Africa with her guide Voight Mokone at the end of a women's 1500 metre T11 heat Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Richard Whitehead of Great Britain after winning the men's 200 metre T42 gold Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Morocco's Youssef Benibrahim celebrates winning the Men's 5000m T13 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 17, 2017 Ntando Mahlangu of South Africa falls during a heat of the men's 100 metre T42 Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 14, 2017 USA's Cassie Mitchell in action during the Women's Club throw F51 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Men's 100 metre T47 heat (L-R) Tomoki Tagawa of Japan, Hao Wang of China and Roderick Townsend-Roberts of USA Action Images via Reuters/Henry Browne

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 15, 2017 Kenya's Samwel Mushai Kimani (R) celebrates winning the Men's 5000m T11 Final Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Namibia's Lahja Ishitile after the Women's 400m T11 Heat 2/2 Action Images via Reuters/Peter Cziborra

Athletics - IAAF World ParaAthletics Championships - London, Britain - July 16, 2017 Abassia Rahmani of Switzerland after finishing in the women's 400 metre T44 final Action Images via Reuters/Henry Browne