Jager, who currently trains in Oregon with the Bowerman Track Club alongside Canadians Mo Ahmed and Matt Hughes, finished in 8:00.45, an American record, but narrowly missed running sub-eight, a milestone in the event.
The 26-year-old American held a considerable margin over eventual winner Jairus Birech heading into the final straight, on pace to break the 8:00 barrier, but fell on the final hurdle. Birech overtook Jager with 50 metres remaining and took the Paris title in 7:58.83.
“The stupid mistake cost me sub-eight minutes, one of my big goals,” Jager told the IAAF afterwards. “I think I would have been able to run about 7:56 if I had not fallen.”
Kenya has been known as the best steeplechase nation in the world winning each Olympic men’s title since 1984 including a clean sweep of the event in 1992 and 2004. The women’s 3,000m steeplechase was only added to the Olympic Games program in 2008.
The IAAF Diamond League is an annual track and field series with events taking place in Europe, North America and Asia.