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Jon Jones claimed he went ’80-percent’ in Gustafsson bout
source | msn.foxsports.com Damon Martin via Fox Sports “I went 80-percent,” Jones said about the Gustafsson fight. “I’m not making any excuses, Gustafsson did a great job in the fight, but I know I had a lot more in me. I did some of the cardio tests that I normally do and …