4. Lucas Matthysse
The hard-hitting Argentinian seemed to be found out by Viktor Postol in his last outing, relinquishing his position as the top dog at 140lbs. However he remains a supremely dangerous night for any man and would be a great acid test for Crawford given his concussive power. Matthysse operates under Golden Boy Promotions, who have begun to work with Top Rank and broadcasters HBO.