Jake Paul says he's a completely different fighter after experiencing the first loss of his boxing career ... and that could be bad news for Nate Diaz, 'cause The Problem Child tells TMZ Sports he's going to put his opponent on the canvas.
Jake and Nate are meeting in the ring for their highly anticipated fight in Dallas on August 5 ... and it's clear his defeat at the hands of Tommy Fury has him laser-focused on winning again.
"Man, I have the biggest chip on my shoulder, the biggest chip on both shoulders," Jake told Babcock on the "TMZ Sports" TV show.