It would be competitive for about 3-4 rounds. An that's a bold statement. Hagelr will hurt him BADLY.
Martinez is doing great, but mistaking the fact he knocked out Williams or this 154 pound champ last night, to mistake those wins with Martinez having a chance to beat Marvin is not thinking clearly. No guy who started boxing at 20 is going to beat Marvin when he was champion. Marvin would stop him. Different caliber of fighter.
Martinez beat Dzinziruk, an elite technical boxer with a tremendous defense and an ATG jab. That fight was the best boxing match put together since when? in a very very long time. Martinez by lefthook KO
Dont get me wrong, I was excited about Dzin aswell, but one only had to look at his fight with Konecny to figure out that he wasn't elite-tier. Hagler on the other hand, was a proven elite in an era when you had a talent pool like none other.