Tough seems like Grappler Baki meets Ashita no Joe. It's an underground fighting manga with pretty brutal fights. I think fans of fighting manga - Hajime no Ippo, Ashita no Joe, Grappler Baki, etc.. would like it.
My friend on the DynamiteGlove Forum scanned Chapter 1 of the manga and is looking for reactions and perhaps someone to translate it. Here is the thread - http://westbound.proboards34.com/index.cgi?board=anime&action=display&thread=1136591885&page=3
Here is the url to get Chapter 01 - http://rapidshare.de/files/10756390/Tough_chapter_1.zip.html