John Rocker's still pissed he's not fighting Patrick Mahomes Sr. this month, and he's taking his anger out on those who he believes scuttled the bout -- Patrick Mahomes II ... and the Kansas City quarterback's "loser wife."
Rocker, of course, was supposed to step in the ring with the elder Mahomes later Friday as part of Dave Portnoy's "Rough N Rowdy" promotion .