UK's Lynsey Sharp (R) pictured in action during the women's 800m race at the 2018 edition of the AG Insurance Memorial Van Damme IAAF Diamond League athletics meeting, Friday 31 August 2018 in Brussels. BELGA PHOTO JASPER JACOBS

Authorised Neutral Athlete Sergey Shubenkov celebrates as he crosses the finish line to win the men's 110m hurdles at the 2018 edition of the AG Insurance Memorial Van Damme IAAF Diamond League athletics meeting, Friday 31 August 2018 in Brussels. BELGA PHOTO DIRK WAEM

Belgian Nafissatou Nafi Thiam celebrates after winning the women's high jump event during the 2018 edition of the AG Insurance Memorial Van Damme IAAF Diamond League athletics meeting, Friday 31 August 2018 in Brussels. BELGA PHOTO LAURIE DIEFFEMBACQ