Though none of the left-handers who ranked on this list before last season began have graduated to the big leagues, there are still several new faces on this year's Top 10. Julio Urias, Henry Owens and Andrew Heaney are the holdovers, albeit with their order reversed from last year.

Published: Jan 21, 2015, 12:59 pm Added: Jan 21, 2015, 5:09 pm

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2015 Prospect Watch: Top 10 left-handed pitchers