Union, Whitecaps FC open season in Vancouver (The Associated Press)

The Philadelphia Union and Vancouver Whitecaps FC look to prove their doubters wrong when they take to the pitch Sunday to open their 2017 MLS campaigns at BC Place in Vancouver, British Columbia. Philadelphia seeks to take the next step forward after its sixth-place finish in the Eastern Conference and a knockout round exit to eventual conference champion Toronto. The Whitecaps FC hope to rebound from a disappointing campaign that saw them finish eighth in the Western Conference and seven points out of the MLS Cup playoffs.