Rubuta ci gaba don wannan sakin layi - An buɗe Filin wasa na Three Rivers a ranar 16 ga Yuli, 1970, amma Pirates sun rasa 3<unk>2 ga Cincinnati Reds a gaban 'yan kallo 48,846. Dock Ellis ne ya jefa kwallon farko, ya buga Ty Cline. Na farko da aka buga a filin wasa shi ne na Pittsburgh Richie Hebner, a kasan wasan farko. 'Yan fashin teku sun ɗaga manufofin ba da talabijin don wasannin gida don magoya bayan gida su iya ganin wasan farko. Lokacin mafi ƙasƙanci na Pirates na halarta shi ne 1985, a matsakaicin 9,085. Matsakaicin yawan masu halarta zai kai kololuwa a 1991, lokacin da Pirates ke da matsakaicin 25,498 a kowane wasa. Wasan farko na 1970 NLCS
, a filin wasa na Three Rivers, shi ne wasan farko na wasan baseball da za a buga a kan farfajiyar wucin gadi. A kakar wasa ta gaba, Pirates sun ci gaba zuwa Wasannin Duniya da Baltimore Orioles. Filin wasa na Three Rivers Stadium ya karbi bakuncin wasa na hudu, wanda Pirates ya ci Orioles a wasan farko na dare a tarihin Wasannin Duniya. Pittsburgh ta karbi bakuncin wasanta na uku na All-Star a shekarar 1974. National League ta lashe wasan 7 zuwa 2 kuma Ken Brett na Pirates shine mai nasara. A 1979, Pirates sun sake lashe gasar zakarun duniya, har yanzu sun ci Baltimore Orioles a cikin wasanni bakwai na gasar cin kofin duniya. Wasanni na 3, 4 da 5 na jerin sun buga a Three Rivers. Shekaru 15 bayan haka, classic midsummer ya dawo a 1994. Tare da masu halarta 59,568, mafi yawan jama'a da suka taɓa halartar wasan ƙwallon baseball a filin wasa, National League ta ci 8-7 a cikin wasan na 10. A ranar 6 ga Yuli, 1980, 'yan fashin teku sun doke Chicago Cubs 5-4 a cikin innings 20 - mafi yawan innings da aka buga a filin wasa. An buga wasan mafi tsawo a filin wasa a ranar 6 ga watan Agusta, 1989, lokacin da Jeff King ya buga wasan gida a cikin sa'o'i 5 da minti 42 a cikin gasar 18-inning, yayin da Pirates suka sake doke Cubs 5-4. A ranar 30 ga Satumba, 1972, dan wasan tsakiya na Pirates Roberto Clemente ya sami nasararsa ta 3,000 a filin wasa na Three Rivers, watanni uku kafin mutuwarsa.