Kammala wannan magana: A ranar 1 ga Yuni, 2015, an yi musayar Walcott daga New York Rangers zuwa Tampa Bay Lightning a musayar zagaye na bakwai na zagaye a cikin
2015 NHL Entry Draft, wanda aka fara aikawa zuwa Tampa Bay a cikin Martin St. Louis cinikin kakar da ta gabata. Walcott ya gama kammala kakar wasa ta biyu a Quebec Major Junior Hockey League tare da Blainville-Boisbriand Armada. Walcott yana da kwallaye bakwai da maki 41 a wasanni 54 na kakar wasa. Ya kuma bayyana a cikin wasan Hockey League na Amurka guda ɗaya tare da Hartford Wolf Pack bayan ya sanya hannu kan yarjejeniyar gwajin mai son.