He started rowing in grade 9 for KCVI, following his brother into the sport.

[2] Within just a few years, Crothers and his rowing partner, Rob Gibson, were Canadian high school champions in the senior coxless pair in 2005.

Additionally, Crothers was named Ontario Male Athlete of the Year in 2005.

[3] He won a silver medal at the 2012 Summer Olympics[1] in the men's eight, just behind the German team, with Andrew Byrnes, Gabriel Bergen, Jeremiah Brown, Douglas Csima, Robert Gibson, Malcolm Howard, Conlin McCabe and Brian Price.

[5] The men's coxless four finished last in the A-final after making it through their heat and semifinal in good standing.