Grand Slam Track, a concept conceived by the four -time Olympic champion Michael Johnson offers an award of $ 12.6 million (£ 10 million) in its first season.
The Tok Place inaugural event in Kingston, Jamaica, last month, but there were large extensions of empty seats in the National Stadium through the three -day event.
Also on the day of opening action in Miami, the second of four Slams, the Olympic champion Masai Russell established an American record in the obstacles of 100 female meters in a time or 12.17 seconds, the second fastest in history.
Compatriot Melissa Jefferson-Wooden won the 100 meters of women, but her fast time of 10.75 was recorded with an illegal tail wind. The Daryll Neita of Great Britain ended eighth at 11.16.
Briton George Mills, one of the 48 ‘challengers’ at the Miami event, was third in the 3000m male in 8: 17.77 to take a general victory opportunity in the 5,000m of Sunday.
The 400m Silver Matthew Hudson-Smith Silver Medalist took the seventh place in the 200M in 20.64 before competing in his favorite event of full flights on Saturday.
The athletes receive points for their final position in both races, with their combined results that determine the champion in each blow.