Rubuta ci gaba don wannan sakin layi - A ranar 2 ga Fabrairu, 2017, an ba da sanarwar cewa Martínez ya sanya hannu kan yarjejeniyar tsawaita shekaru biyar tare da St. Louis Cardinals wanda yakai dala miliyan 51. A ranar 2 ga Afrilu, 2017, Martinez ya fara farawa na farko a cikin aikinsa, yana wasa da mai kare gasar zakarun duniya
Chicago Cubs a filin wasa na Busch. Ya buga 10 kuma bai yarda da tafiya ba kuma ya buga wasanni shida a cikin wasan. Ya sami rashin yanke shawara yayin da Randal Grichuk ya buga wasan motsa jiki-wanda aka ɗora a kasa na tara. A filin wasa na Yankee a ranar 15 ga Afrilu, Martínez ya doke 'yan wasa 11, kuma ya yi tafiya takwas, ya zama na farko da ya yi rikodin waɗannan alamun biyu a cikin wasa guda tun bayan Randy Johnson a 1993. Martínez ya kammala innings a cikin asarar 3-2 ga New York. A ranar 10 ga Yuni, Martinez ya buga duka wasan farko na wasan da ya fara aiki da kuma rufewa yayin da ya ba da izini hudu yayin da Cardinals suka ci Philadelphia Phillies 7<unk>0.