Tuhia he haere tonu mō tēnei wāhanga - I te tau 2011 i kitea ai e Harrison te whakatutukitanga i te taumata matua. I wikitoria ia i tana whakataetae tuatahi i te huihuinga UCI Track World Cup i Beijing, i wikitoria i te omnium. Ko te putanga tuatahi mo Harrison i te UCI World Track Championships i tae mai i te 2011
, i riro ai i a ia he mētara parahi hei wāhanga o te Team Pursuit. I tohua ia ki te whiringa toa i muri i te turanga o Ed Clancy i mate. I mutu hoki a Harrison i te tekau ma tahi i te omnium.