Sprint great Michael Johnson launching 'Grand Slam Track' league
Sprinting great Michael Johnson is launching a track league that looks to assemble nearly 100 of the sport's top performers four times a year to compete for $12.6 US million in prize money over its first season.
Sprinting great Michael Johnson is launching a track league that looks to assemble nearly 100 of the sport's top performers four times a year to compete for $12.6 US million in prize money over its first season.
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