Rubuta ci gaba don wannan sakin layi - A matsayin babban manajan gasar tare da ƙungiyoyi huɗu - Indians (1935<unk>1937), Tigers (1943<unk>1948), Red Sox (1950<unk>51) da Philadelphia Phillies (1952<unk>1954) <unk> O'Neill ba shi da tarihin rashin nasara. Tigers dinsa sun lashe gasar cin kofin duniya ta 1945 (lokacin da suka ci Chicago Cubs a wasan karshe na Cubs har zuwa 2016
) kuma O'Neill an san shi da juya ƙungiyoyin da ba su da kyau, sau da yawa a tsakiyar kakar wasa.