Nice! Yep, both ended up in the hospital, pissing blood. Mugabi started his career with 26 straight KO's before losing to Hagler. I read a nice writeup afterwards saying they thing that is a big factor in why Mugabi lost. In his first 26 fights, he had only even been past 6 rounds one time. They questioned his stamina since he ended all his fights early.
After that fight, Mugabi was KO'd in the 1st round, 1st round, and 3rd round in three major title fights after the Hagler fight.