Rubuta ci gaba don wannan sakin layi - López watakila an fi saninsa da rawar da ya taka a matsayin mai ba da taimako ga Tigers a lokacin gasar zakarunsu ta 1984, lokacin da ya gama da rikodin 10<unk>1, 14 ya ceci, da 2.94 ERA. López yana da rikodin 1 <unk> 0 a duka Wasannin Wasannin Wasannin Wasannin Wasannin Wasannin Amurka na 1984
(ALCS) da kuma 1984 World Series, kuma bai ba da gudummawar da ya samu ba a cikin sama da innings shida da aka jefa a wannan kakar. Ya fuskanci 'yan wasa bakwai a Game Five na 1984 World Series, ya yi ritaya da su duka a Detroit ta 8-4 Championship-clinching nasara. Bayan da mai jefa kwallo ya fita daga wasu karin wasanni biyu don samun nasara a wasa na 2 na ALCS a Kansas City, kocin Detroit Sparky Anderson ya ce, "Babu abin da ya ba ni mamaki game da Lopez. Na yi shekaru biyar ina da shi kuma ku yi imani da ni, babu wani kamarsa. Yana da zuciya kuma babu wanda ya fi shi. Shi ne daya daga cikin dukan lokaci zukãtansu. " Yayin da yake Detroit, López ya sami laƙabi da "Señor Smoke", kamar yadda ya fito daga Mexico kuma ya jefa ƙwallon mai ƙarfi.