Rubuta ci gaba don wannan sakin layi - Padres sun kasance a matsayi na ƙarshe a cikin National League West tare da rikodin 42<unk>76, wasanni 26 daga matsayi na farko, kuma sun yi musayar Miller zuwa National League East division-leading Pittsburgh Pirates a ranar 10 ga Agusta, 1971 don Johnny Jeter da Ed Acosta. Miller ya ci gaba da samun nasara a cikin bullpen, ya ƙare kakar wasa tare da Pirates tare da rikodin 1<unk>2 da ceto uku a cikin bayyanuwa 16, duk a cikin taimako, yana gamawa da 1.29 ERA. Miller ya buga wasa na biyu na gasar zakarun kasa ta 1971
, shiga cikin inning na shida kuma ya ba da bugun jini uku, tafiya uku da gudu biyu a cikin innings uku na aiki a cikin wasan da Pirates suka ci nasara don kayar da San Francisco Giants da ƙimar ƙarshe na 9<unk>4. Ya buga taimako a wasanni uku a cikin Wasannin Duniya na 1971 da Baltimore Orioles wanda Pirates ya ci nasara a wasanni bakwai, yana bayyana a cikin taimako a cikin asarar Pirate uku (a wasa na farko, na biyu da na shida na jerin), yana shan asara a Wasan 6 lokacin da ya ba da hadayar tashi zuwa Brooks Robinson wanda ya kawo nasara.