
Nadine Muller of Germany competes during the women's discus throw final at the IAAF World Challenge Meetings in Zagreb, Croatia, on Aug. 29, 2017. (Xinhua/Goran Stanzl)

Nadine Muller of Germany competes during the women's discus throw final at the IAAF World Challenge Meetings in Zagreb, Croatia, on Aug. 29, 2017. (Xinhua/Goran Stanzl)