Matthysse would get to him around the 10th round, but what a war it would have been, Gatti would go out on his shield and give it everything like always.
Some people are obsessing over Lucas, like he is unstoppable at 140. Matthysse is a very good fighter, he has yet to reach elite. I will grant him the Alexander victory, but he started to slow against Zab and the socres were very close and it is a legit loss. Other than that he has a pretty low level of competition. I don't blame that on Lucas but GBP. I think he is a top 5 140 lbr though. It depends which Gatti shows up. The one that went life and death with Ward would force a close dec. A more faded Gatti would get stopped. I think 140 was probably Gatti's best weight.