Castillo fucks him up, and I don't see much of an argument otherwise. I don't see Tank beating any lightweights from that era except for Juan Diaz and Spadafora. He loses to prime Johnston, Casa, Castillo, and Corrales imo. Might even lose to Lazcano. Floyd I didn't even bother listing, cause that's too obvious. Mosley vs Tank would be the biggest mismatch.
Obviously Davis can crack but Castillo has walked through fire before and absorbed multiple blows. Then you factor in the damage JL would be doing to diminish Tank all the while. The only chance would be to catch Castillo cold and very early. He's not going to get mugged and abused for multiple rounds against somebody like JL and bail himself out with a single shot.
Much much lesser lightweights than Rosario would beat Tank. Whitaker and Duran, we're talking two top 10 ATGs . That's overkill.
I was thinking about what a Corrales vs. Tank fight would look like. Chico was a slow starter and southpaws could give him trouble but I don't see Tank being durable enough to take what's going to come back at him.
The first 6 rounds would be the most dangerous for Chico. If he's still standing after that, and still applying pressure on Tank, he would drown him late.
I don’t think Tank bothers Corrales at all. Chico was most troubled by movement and hand speed. If you have the chin to stand up to him and hurt him, you can bang inside but it’s risky. I think Tank is too small to do anything to Chico. Corrales KO 6
Castillo wouldn’t give Tank time to breath and would literally be on his ass the entire fight. It’ll be Cruz 2.0 against Tank.