Other events were held in Shanghai, Eugene, Rome, Birmingham, Oslo, New York City, Paris, Lausanne, Fontvieille, Monaco, London, Stockholm, and Zürich.
All previous venues remained on the tour, with the exception that London returned to host the second meeting in the United Kingdom, having been replaced by Glasgow during the 2014 IAAF Diamond League.
Allyson Felix of the United States won the women's 200 metres with a run of 21.98 seconds to equal Veronica Campbell Brown's time which was set during the inaugural 2010 IAAF Diamond League season.
[4] Jasmin Stowers, making her debut on the circuit, broke the women's 100 metres hurdles record with a time of 12.35 seconds – this raised her to seventh on the all-time rankings for the discipline.
The reigning Olympic champion, Christian Taylor, was runner-up and moved himself up to fourth on the all-time lists with a mark of 18.04 m (59 ft 2 in), making the contest the first in history to feature two men going beyond eighteen metres.
Mutaz Essa Barshim defeated Bohdan Bondarenko in the men's high jump with a meeting record and world-leading mark of 2.38 m (7 ft 9+1⁄2 in).
Aside from Gong, Lü Huihui was China's only other home nation victor, and her winning mark of 64.08 m (210 ft 2+3⁄4 in) from the women's javelin throw was also a meeting record.
[10][11] Renaud Lavillenie continued the streak of Diamond League records by winning the men's pole vault with a mark of 6.05 m (19 ft 10 in), raising him to joint second on the all-time outdoor lists.
Ethiopian male distance runners provided two of these, with Mohamed Aman winning the 800 m in 1:43.56 minutes and 17-year-old Yomif Kejelcha taking his first Diamond race victory in the 5000 m with the first sub-13-minute run of the season.
Justin Gatlin knocked one hundredth off Usain Bolt's 2012 time with 9.75 seconds in the men's 100 m. Pedro Pablo Pichardo took down two much longer-standing marks in the men's triple jump with his jump of 17.96 m (58 ft 11 in): Jonathan Edwards 1998 meet record and also Khristo Markov's 1987 stadium record, which was the winning mark of the 1987 World Championships in Athletics.
A men's high jump billed as a contest between Mutaz Essa Barshim, Bohdan Bondarenko and Ivan Ukhov saw all finish outside the top two, as China's Zhang Guowei had his first Diamond League victory and Marco Fassinotti equalled the Italian record of 2.33 m (7 ft 7+1⁄2 in).
[23] The greatest upset of the night came through Laura Muir in the women's 1500 m. The Briton built up a 40-metre lead to have her first major circuit win ahead of the more favoured Abeba Aregawi.
Ajeé Wilson brought an end to Eunice Jepkoech Sum's run in the women's 800 m and Sandra Perković became the first athlete of the series to gather four straight wins.
Nikoleta Kyriakopoulou of Greece also set a national record, but her pole vault clearance of 4.80 m (15 ft 8+3⁄4 in) left her second to Fabiana Murer on count-back.
[30] Renaud Lavillenie was the favourite for the men's pole vault, but finished in fifth place and recorded his first loss in seven years at the meeting on home soil.
[36][38] Yaime Pérez had her first ever Diamond League win and in doing so brought an end to Sandra Perković's unbeaten streak in the women's discus throw.
[34][37] At the Herculis meet Genzebe Dibaba provided the highlight with her 1500 metres world record of 3:50.07 minutes, breaking Qu Yunxia's time from the 1993 Chinese Games.
The veracity of the previous record had been subject to doubt and Genzebe's time—almost two and a half seconds faster than any time set outside the Chinese Games—attracted questions in addition to plaudits.