Organizers announced today that Rupp is out.
"Unfortunately I will be unable to race on Sunday due to plantar fasciitis in my foot," said Rupp. "It is improving, but not enough to run a half marathon on. I hope to get the chance to run the Aramco Houston Half Marathon in the future."
Mare Dibaba (death in family) and Tigist Tufa (injury) are out of the women's race as well.