The Whole Sky Full of Stars by Rene Saldana
Barry and Alby have been best friends since kindergarten, and now Alby is in trouble with loan sharks but doesn't feel he can tell Barry about it. He does, however, feel he can exploit Barry's boxing talent by conning him into fighting in a cage match and acting as his manager so they can split the money.
Even though this is a super skinny book and a quick read, it didn't hold my interest enough to finish it. The two main characters are so broadly drawn -- Alby's a weasel, Barry's a ridiculously stand-up guy trying to help his mom since his dad died -- that it wasn't worth the time. NAY.