Former Sooner track and field athlete Kerri-Ann Mitchell has been added to Canada's Olympic roster, Athletics Canada announced Sunday.The Pickering, Ontario, native finished third in the women's 100-meter dash at Canadian Olympic Trials, running a wind-aided 11.34 seconds, Friday, June 29.Mitchell passed the Olympic B standard in the event by clocking a personal-best 11.36 at the Donovan Bailey Invitational Track Meet in Edmonton on June 16.