Ricketts left Sūduva the following week after club's away victory in the Europa League third qualifying round game for a return to MLS. On 8 August 2019, Ricketts returned to MLS and Canada, joining Vancouver Whitecaps FC. In 2007 Tosaint was called up to the Canadian U-20 team for the 2007 FIFA U-20 World Cup held on home soil. He also made appearances for Canada in the 2008 CONCACAF Men's Pre-Olympic Tournament in which he scored twice against Guatemala. In late January 2011, Ricketts was called up by Canada for the first time ahead of its international friendly against Greece on 9 February. Ricketts made his senior team debut for Canada as a late second half sub in this game which ended as a 1–0 loss. Tosaint was one of three Canadian players to make their international senior debut against Greece; Milan Borjan and David Edgar were the other two. On 1 June 2011, Ricketts scored his first international goal, a stoppage time equalizer, in a 2–2 friendly match against Ecuador at BMO Field. Ricketts made his CONCACAF Gold Cup debut on 14 June in a 1–1 draw against Panama as a second half sub for Josh Simpson. Ricketts continued his goal scoring form in World Cup Qualifying during his first ever start for the national team on 15 November 2011 during a 4–0 home victory over Saint Kitts and Nevis. Ricketts reached 10 goals for Canada on 16 June 2015 after scoring a brace against Dominica in 2018 FIFA World Cup qualifying. This tied him with Paul Peschisolido and Tomasz Radzinski for 9th all time on Canada's scoring charts. Ricketts was named to the 2017 CONCACAF Gold Cup squad on 27 June 2017. A fast striker, Ricketts is mainly known for his pace. His former Toronto FC manager Greg Vanney said of him in 2017: "He gives us presence, size, speed, a goal-scoring threat." Regarding his speed, movement, and work-rate, Vanney also added: "[Ricketts] is a relentless runner. A guy who will get behind defences. He's incredibly fast. He doesn't really need to run the line. He can give himself three, four lines of cushion and still make the runs in behind and still beat you to the spot." That same year, Neil Davidson of "The National Post" described him as the "fastest player on the Toronto roster," and also noted that "Ricketts’ speed unsettles defenders and he has an ability to find space in the penalty box.