Ku qor sii wadida cutubkan - McIlhargey wuxuu ku dhashay Maarso 7, 1952 magaalada Edmonton, Alberta. McIlhargey wuxuu ciyaari jiray sideed sano oo uu daafaca u ahaa, wuxuuna bilaabay markii uu xirfadle ka noqday Philadelphia Flyers sanadkii 1974. Wuxuu noqday Canuck Janaayo 20, 1977 markii lagu beddelay Vancouver Larry Goodenough oo lagu beddelay Bob Dailey. Wuxuu u soo muuqday 167 ciyaarood Canucks (1977-80) ka hor inta aan dib loogu celin Philadelphia lacag caddaan ah Janaayo 2, 1980. Wuxuu xirfaddiisa NHL ku dhammeeyay Hartford Whalers ka dib markii lagu beddelay Norm Barnes Nofeembar 21, 1980 doorashada wareega labaad ee Hartford ee 1982 Entry Draft
Waxaad Wuxuu ciyaaray 393 ciyaarood oo NHL ah isagoo diiwaangeliyay 11 gool, 36 caawin iyo 1102 daqiiqo oo ganaax ah. Wuxuu ka fariistay xilli ciyaareedkii 1981/82.