HANAMAKI, Japan - Stanford University slugger Rintaro Sasaki announced Sunday that he will begin his professional baseball career with the Miami Marlins, turning down an offer from the SoftBank Hawks after being selected by both clubs in their respective drafts.

"I want to live a life where I choose to challenge myself or not, rather than focusing on whether I succeed or fail," Sasaki said during a press conference in Hanamaki in his home prefecture of Iwate.

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