Jake Paul says Dillon Danis is doing exactly what Logan expected by spewing nonstop trash talk leading up to their boxing match ... telling TMZ Sports lines have been crossed, but at the end of the day -- it's only making his brother richer.
The Problem Child joined Babcock on the "TMZ Sports" TV show (airs on FS1) ... and he got into all things boxing, Betr ... and, of course, Logan's current arch nemesis.
In case you've been hiding under a rock, Danis has been unloading on Logan and his fiancée, Nina Agdal, on social media .