the impact also had a rivalry with mls side toronto fc. toronto fc and montreal impact both participated in the canadian championship annually along with vancouver. on june 18, 2009, the impact suffered its worst defeat, losing 6–1 to toronto fc. the lopsided loss by the impact eliminated the vancouver whitecaps from the 2009 canadian championship, thus causing resentment among some whitecaps fans towards the impact. as a result, another chapter was added to the rivalry between the whitecaps and the impact.