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B-ref regards Lieber as the most similar pitcher to the Harangutan through age 31. The comp makes sense to me : http://www.baseball-reference.com/players/l/liebejo01.shtml
Maybe it could be useful, in your Harang POTD, to look to Lieber's transition from NL to his one season in the AL...
In 2004, at age 34, Lieber put up an ERA+ 104 in front of MLB's worst defensive team that year (-76.3 UZR).