Allyson Felix withdrew on the eve of the Prefontaine Classic and will miss Saturday’s anticipated 400m showdown with Olympic champion Shaunae Miller-Uibo and world champion Phyllis Francis.
No reason was given by the meet director at a Friday press conference, according to media in Eugene, Ore.
Felix, a nine-time Olympic medalist and 16-time world outdoor championships medalist, was scheduled to race on the top international level for the first time since Aug. 20.
This is the one year in the four-year cycle without an Olympics or world outdoor championships, making the Diamond League, and the Pre Classic in particular, marquee meets.