Nyorai kuenderera mberi kweiyi ndima - Munguva yemusasa wekudzidzira wemwaka wa2014 / 15, McDavid akatumidzwa zita rekuti kaputeni weErie Otters. McDavid akanga ane simba kutanga mwaka asati kuputsa ruoko rwake mune on-chando kurwa musi waNovember 11, 2014. Panguva iyoyo, McDavid akanga achitungamirira OHL mumapoinzi, achinge arova zvibodzwa gumi nezvitanhatu uye 35 anobatsira mumitambo gumi nesere. McDavid akarasikirwa nemavhiki matanhatu ekutamba semugumisiro wekukuvara kwake, achidzokera kune chando kuti atambe kuCanada pa2015 World Junior Championships
. Akabatanazve neOtters musi waNdira 8, 2015, achihwina zvibodzwa mukurasikirwa ne4 × 3 vachipesana neSarnia Sting. Mumitambo 47 iyo McDavid yakatamba neOtters munguva ye2014 / 15 nguva dzose, akanyoresa 44 zvinangwa uye 76 anobatsira, achipedza wechitatu muOHL scoring. McDavid akaita zvakanaka mumutambo weOHL playoffs, achihwina zvibodzwa makumi maviri nezvishanu uye zvibodzwa makumi maviri nesere uye achitungamira vatambi vese nemapoinzi makumi mana nemapfumbamwe (mukuenzanisa, Sault Ste. Mutambi weMarie Greyhounds, Nick Ritchie, akanga ari wechipiri mumakwikwi ekupedzisa ne 26 points). Akapiwa Wayne Gretzky 99 Award sezvo playoff MVP pasinei nokuti Erie Otters vakanga vadzingwa mumitambo 5 muna OHL Championship kubudikidza Oshawa Generals. Kaputeni weNew York Islanders, uye aimbova mukuru weOshawa, John Tavares, aivepo panguva yeMutambo 3 wemakwikwi ekupedzisira a2015 ndokuti kuna McDavid: "Handifunge kuti ndakamboona chero munhu ane rudzi irworwo rwekumhanyisa <unk> iwe unofunga kuti ari pamusoro pekugadzira uye panogara paine imwe nhanho".