Might wanna edit the thread subject, Kevin Johnson will not be the first man to stop Kevin Johnson, Anthony Joshua might do it though, ref stoppage maybe.
To be honest with you I don't think it matters. As long as he wins that's all that matters. Knocking out a fighter that's never been knocked out before in their prime is one thing. Knocking out Johnson now really means nothing to me. Lets just hope he wins (which he will do) and keeps slowly getting better opponents and becomes something special.