I go with Curry based on the fact that he beat Starling. Judah never beat a fighter even close to Marlon`s level always failed at the highest level.
I pick Curry and everyone else will, but Zab beat Spinks who was a multiple belt holder and also has wins over Witter and Matthysse.
Zab will cockily prance around the ring after climing through the ropes. He will nod and stare Curry down during the pre-fight instructions. Curry will offer a wry grin in return. Zab will open with movement and quick jabs. Curry will methodically inch forward with high guard, studying the mercuial whirlwind he is presented with. Zab wins the first few rounds based on activity and movement. Curry offers little but some body blows and the occasional jab. Zab is feeling confident (borderline cocky) and loose. He decides to begin attacking Curry with abandon - guard low, relying on reflex. Curry times Zab on the way in with a perfect counter right hand. Zab is visably shaken. Curry pounches with an array of left hooks, uppercuts and right hands. Judah is deposited on the canvas. He rises on shaky legs. Curry traps him on the ropes. Judah still has enough wits to hold his hands up, but Curry lands blows around and through his gloves. The referee intervenes saving Zab from futher punishment before he slumps to the canvas. Zab, crazy and cocky as ever, protests the stoppage. Curry's hand is raised as he registers a comprehensive 4th round tko.
you have to go with Donald. I see him picking him apart and stopping Zab in 3 or 4. I still Milton McCrory stopping Judah in about 5 or 6.
Prime Curry was very good. And he was a natural welter. He beats both Judah and Kostya in the same night.