Pedzisa mutsara unotevera: Muna 2011 Harrison akabudirira zvikuru. Akakunda mumakwikwi ake ekutanga kuUCI Track World Cup muBeijing, achikunda omnium. Kuoneka kwokutanga kwaHarrison paUCI World Track Championships kwakauya muna
Muna 2011, akahwina menduru yebronze sechikamu cheTeam Pursuit. Akasarudzwa mumutambo wokupedzisira pashure pokunge mutambi wenguva dzose Ed Clancy arwara. Harrison akapedzawo ari wechi11 mumutambo wacho.