Hi, again. Yes, they'll spar, and will draw blood. If one in particular is being ganged up on by the rest, he needs to be seperated ASAP. Ours didn't seriously pursue the chest bumping, neck wrapping snood pulling, leap/slash, etc. until they were about 18wk. old. Yes, their heads and necks would sometimes appear to have been abraded on asphalt, but no eyes were lost, no breasts slashed open, only the loser standing with snood dragging the ground, but already plotting an overthrow of the chuffing, strutting, victor...
We've had very good luck with pine tar when they go overboard (wouldn't use it until they are older). As has been mentioned once the order is worked out you'll probably have a few weeks of calm before the next dust up. But, at nine weeks, they're feeling their cheerios and practice sparring makes perfect.
They have tough, fast healing skin on their heads. Don't bother with the pine tar until they are at least 18wk. and the sparring is protracted (fighting in the middle of the night) and bloody. You could, if you have one, try introducing a tom in with the boys and that might take care of the alpha (or else!), summer afternoon trilling, panting and drooling knock down drag-outs (wouldn't quit, but less intense).
Keep plenty of rubber feed pans filled with fresh water (the heat stress can be worse than the abrasions from sparring).
Just soak and wring out clean washcloth with betadine tea to daub any scrapes. If worse (torn caruncle, for instance) clean and apply plain antibiotic ointment.
They will be kept together and completely seperated from jennys and hens, yes? (nothing but serious interference with goal of putting on wt. for TD.).