On 26 February 2011, Ricketts made his debut for Politehnica Timișoara at Dan Păltinişanu in a 3–1 win against Gaz Metan Mediaş.

[6] On 31 August 2012, it was announced that Ricketts had signed for Vålerenga in the Norwegian Tippeligaen on a free transfer, he would be joining fellow Canadian international Lars Hirschfeld at the club.

[9] Ricketts played a total of 12 matches in Tippeligaen until he left Sandnes Ulf in September 2013, he also scored two goals for the club in the Norwegian Cup.

He debuted with the side on 16 August 2014 in a Toto Cup match against Bnei Sakhnin, and scored a goal in an eventual 2–2 draw.

[18] He made his debut from the bench in a 4–1 win against D.C. United, and scored his first goal in his next appearance: a 1–0 victory against Real Salt Lake City.

[28] His final appearance for the club was during the UEFA Europa League second qualifying round, a 5–0 home victory against Tre Penne.

Ricketts left Sūduva the following week after club's away victory in the Europa League third qualifying round game for a return to MLS.

Ricketts was one of three Canadian players to make their international senior debut against Greece; Milan Borjan and David Edgar were the other two.

[35] 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.

[36] 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.

[37] Ricketts reached 10 goals for Canada on 16 June 2015 after scoring a brace against Dominica in 2018 FIFA World Cup qualifying.

"[40] 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.

[45] Regarding his role on the pitch, Ricketts has commented: "I watch the tendencies of defenders, what spaces and weaknesses I can exploit and come second half I'm just waiting for any amount of time possible — if it's two, five, 15 minutes — to come on and provide that spark.