Frias' contract was purchased by the Diamondbacks on Friday.

One of Arizona's most talented pitching prospects, Frias has a chance to develop into a high-strikeout starter or a late-inning reliever, depending on the development of his third pitch and his command. He has never pitched above Low-A but spent the summer at the alternate training site, likely setting up an assignment to High-A or Double-A in 2021.

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