PARIS — Canadian sprinter Andre De Grasse, bothered by a hamstring injury and bounced from the 200 metres on Wednesday, said he will have to “re-evaluate” his professional relationship with Rana Reider, his coach.

Reider’s Olympic accreditation was revoked by the Canadian Olympic Committee, which said the decision to provide the coach with access to the Games was based on the understanding that his probation with the U.S. Center for Safe Sport ended in May, and that it learned new information that led them to revoke the accreditation.