In 2012, Warner qualified in the 100m for the 2012 Summer Olympics by winning his first Canadian championship in 10.15s. That also qualified him to be a member of the 4 × 100 m relay team. At the Olympic Games, Warner finished 13th overall running a personal best of 10.09s twice in both the heat and the semi-final. Next up was the 4 × 100 m relay with Gavin Smellie, Oluseyi Smith, Jared Connaughton & Warner anchoring. In the final, the Canadian relay team arrived in third place and initially believed they had won bronze but they were disqualified when officials judged that Connaughton had stepped on the lane line just before passing the baton. The relay team from Trinidad and Tobago were awarded the bronze.Canadian 4x100 team disqualified following third-place finish. (2012-08-11). Retrieved on 2013-02-22.
