Kammala jumla mai zuwa: A 1997, Rentería ya buga wasan farko a cikin aikinsa don daidaita wasan da Cincinnati Reds a ranar 5 ga Afrilu, kuma ya lashe wasan 4-3 tare da RBI guda ɗaya a cikin na goma sha ɗaya. A ranar 27 ga Afrilu, yana da wasan da ya lashe wasa a cikin wasan na tara wanda ya ba Marlins nasara 4-3 a kan Dodgers. Daga 13 ga Mayu zuwa 29, yana da wasanni goma sha uku da ya buga. Daga 16 ga Yuli zuwa 18 ga Yuli, yana da sau uku a cikin wasanni uku a jere. A ranar 15 ga Agusta, RBI daya a cikin ninth inning ya ba Marlins nasara 6 zuwa 5 a kan Pittsburgh. Rentería ya gama kakar wasa tare da.277 batting average, 171 hits, da kuma 32 sata bases a 154 wasanni. A wannan shekarar, Florida Marlins sun sami katin daji don ci gaba zuwa wasan karshe a karon farko a tarihin su. A cikin Wasan 1 na Wasannin Rukunin Wasannin Na Kasa na 1997 (NLDS), Rentería ta RBI guda a kasan na tara daga Roberto Hernández ya baiwa Marlins nasara 2<unk>1 akan San Francisco Giants. Marlins sun kori Giants a cikin jerin kuma sun ci Atlanta Braves a cikin
1997 National League Championship Series (NLCS) don fuskantar Cleveland Indians a cikin Wasannin Duniya. A cikin Wasan 7, tare da ƙididdigar da aka yi a biyu da biyu a cikin zagaye na goma sha ɗaya, Rentería ya buga wasan RBI guda ɗaya daga Charles Nagy don zira kwallaye Craig Counsell. Hit ya lashe wasan 3<unk>2 kuma ya lashe gasar cin kofin duniya ta farko a tarihin Marlins.