Ukraine's Yaroslava Mahuchikh competes during the High Jump Women during the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

Sweden's Armand Duplantis clears the bar during the Pole Vault men at the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

Sweden's Armand Duplantis competes during the Pole Vault men at the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

Netherland's Sifan Hassan competes in the 1 Mile Women during the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

USA's Fred Kerley competes in the 100m Men during the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

USA's Michael Cherry celebrates after winning the 400m Men during the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

Netherland's Sifan Hassan poses with the board after placing first and setting a record in the 1 Mile Women during the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)

Jamaica's Natoya Goule, left, in action during the 800m Women at the Diamond League Memorial Van Damme athletics event at the King Baudouin stadium, Brussels, Friday, Sept. 3, 2021. (AP Photo/Olivier Matthys)