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Jon Jones responds to GSP’s PED criticism: ‘I guess brain damage is real’

Jon Jones took sharp aim at Georges St-Pierre over recent comments that applied to Jones.

GSP, the former UFC welterweight and middleweight champion, told MMA Fighting that he believes anyone who has a past history with performance-enhancing drugs should not be in the conversation of best MMA fighter of all time. Jones, of course, has failed two USADA drug tests over the last two-plus years.

On Monday in an Instagram post, Jones expressed his displeasure with St-Pierre’s comments, particularly GSP’s assessment of how steroids can help athletes.

“Saying steroids change more than physical performance,” wrote Jones, who is arguably the best MMA fighter of all time.