Jake Paul was VIOLENT on Thursday -- mauling AnEsonGib in their big boxing match in Miami ... followed by an intense face-off with KSI.
23-year-old Jake only needed 2 minutes and 18 seconds to destroy his 23-year-old opponent at Island Gardens in Miami in a fight that was streamed on DAZN.
After the fight, KSI -- who recently defeated Jake's older bro Logan Paul -- entered the ring and the two men got right in each other's faces.
The two cussed each other out and talked a LOT of trash -- with Jake telling KSI, "You had to beat my bro by a bad call.