Demetrious Johnson has been vocal through the years that he’s in favor of grounded knees in mixed martial arts, and he let it be known again on the night Petr Yan lost his UFC bantamweight title by disqualification for delivering a brutal illegal knee to Aljamain Sterling’s head. “Knees to a grounded opponent should be allowed!” Johnson tweeted after UFC 259 on March 6. And so it’s ironic – isn’t it? – that the first stoppage loss of Johnson’s illustrious career would be caused by a grounded knee. They’re legal in ONE Championship, and he was on the receiving end Wednesday night at ONE on TNT I, where flyweight champion Adriano Moraes won by knockout in the second round of their title fight .
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