To answer the question from the thread title, Sergio Mora is another who came down from 160 to win a title. Oh well, I assume you mean from 160 to 147 - otherwise ODLH has already done the feat once. However, someone must surely have made that jump as well, at the very least before the Light Middlleweight Division was installed (way back when).
Although he struggled, Roy Jones did btw go from winning a HW title to winning a LHW-title in his next fight, too.
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