Kammala jumla mai zuwa: Kanervo ya karya 50 seconds a cikin mita 400 a karo na farko a ranar 11 ga Afrilu 2015 a Greenville, North Carolina, yana gudana 49.78. Ya sha wahala daga raunin groin na yau da kullun a cikin lokacin koleji na 2015, amma ya kasance cikin kyakkyawan tsari; ya cancanci zuwa wasan karshe na NCAA na farko, yana matsayi na shida a cikin 50.20. A cikin
Gasar Zakarun Turai ta U23 ta 2015 a Tallinn Kanervo ya inganta mafi kyawunsa zuwa 49.66, ya lashe azurfa a bayan Patryk Dobek na Poland; shi ne kawai wanda ya lashe lambar yabo ta Finland.