It’s unlikely that the entire MMA industry will ever be on the same page when it comes to the perfect number of weight classes, but it’s hard to ignore the constant troubles at lightweight. The UFC’s 155-pound division has long been one of its deepest, and other than welterweight (73 bouts), no weight class had more fights (70) in 2017.
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Daily Debate: Is a 165-pound UFC division the answer to one of MMA’s biggest problems? – MMA Junkie