Chinese athletes collected three gold medals and notched two of the three world-leading marks achieved at the Nanjing IAAF World Challenge on Tuesday.
Hammer thrower Wang Zheng, silver medalist at the 2017 world championships in London, claimed her third title of the month with a fourth-round heave of 75.27 meters, beating DeAnna Price of the United States (74.21m) and reigning world and Olympic champion Anita Wlodarczyk of Poland (73.64m).
The 31-year-old Wang also won at the Asian Championships in Doha (75.66m) and at the Golden Grand Prix in Osaka, Japan (75.27m) last weekend to maintain an unbeaten streak at international competitions this year.
"I am pleased to achieve three over-75m victories in a row, but I am not in my best form now. I will save my best or the world championships in Doha later this year," said Wang.
Wang's teammate Gong Lijiao, the world's No 1 female shot putter, has also set her eyes on the Doha worlds.
Last weekend defending world champion Gong conceded her first loss in 14 months at the Shanghai leg of the Diamond League, but she bounced back to score a convincing victory in Nanjing with a world-leading mark of 19.84m.
Gong hurled 18.90m to take an early lead, then improved to 19.42m and 19.84m in the last two rounds to seal her victory. Wang hammers down yet another gold in Nanjing.
Danniel Thomas-Dodd of Jamaica finished second at 19.21m while Chase Ealey of the United States, who took a surprising victory in Shanghai, also achieved 19.21m but had to settle for third place after a countback.
China's star high jumper Wang Yu celebrated his second title in three days after clearing 2.31m to tie the world-leading mark set by Canada's Michael Mason last month.
Wang Yu, who cruised to the top of the podium in Shanghai, recorded jumps of 2.20m, 2.23m and 2.26m before clearing 2.29m on his second attempt.
When the bar was raised to 2.31, the 27-year-old only needed one jump to clear it, but he failed to make 2.33m in front of the frenzied home supporters.
"I was in a very good form today, so it was a pity that I failed to clear 2.33m. I will try to improve my personal best in the next competitions," said Wang Yu, whose outdoor best of 2.33m was recorded in Beijing in 2013.
Canada's Django Lovett and Maksin Nedasekau of Belarus both cleared 2.29m to tie for second after a countback.
The other world-leading mark of the night was registered by Ethiopia's Gudaf Tsegay, who produced the first sub-four-minute performance to win the women's 1,500m in 3:59.57.
Her compatriot Axumawit Embaye clocked 4:00.17 to finished second, followed by the Netherlands' Sifan Hassan in 4:00.53.
The American team also captured three gold medals on Tuesday, with three-time world champion Christian Taylor winning the men's triple jump with a leap of 17.47m and Michael Rogers and Brianna McNeal taking top honors in men's 100m and women's 100m hurdles respectively.
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