Mezue ahịrịokwu na-esonụ: Na June 1, 2015, a gbanwere Walcott site na New York Rangers na Tampa Bay Lightning na mgbanwe maka nhọrọ nke asaa na draft na
2015 NHL Entry Draft, nke izizi zigara Tampa Bay na azụmahịa Martin St. Louis n'oge gara aga. Walcott ka mechiri oge nke abụọ ya na Quebec Major Junior Hockey League na Blainville-Boisbriand Armada. Walcott nwere ihe mgbaru ọsọ asaa na isi ihe 41 na egwuregwu 54 oge niile. Ọ pụtara na otu egwuregwu American Hockey League na Hartford Wolf Pack mgbe ọ bịanyere aka na nkwekọrịta amateur.