Chavez by stoppage. I think it would be a firefight while it lasted,. Chavez is just too relentless and can easily accept Tzyus power.
Both 2 of my favorite fighters, Tsyzu comes right at you in the typical Russian standup style, he can be hit, and Chavez would break him down to the body and head as he did Taylor, while taking a lot less punches, but more power shots that hurt, but as it was stated above, Chavez will take them and win.
