Dave Meltzer is reporting that Aleister Black is out of action due to an injury. He was injured at the live event in Las Vegas on Saturday night during his match with NXT Champion Tommaso Ciampa.
The injury occurred when he was crotched. There are no other details available other than he will need to get surgery and the injury was described as "scary" when it first occurred. Thankfully, he will be ok.
At this point, it doesn't look like he will be able to wrestle at Takeover: Brooklyn 4. Black was scheduled to wrestle in a Triple Threat Match that also includes Ciampa and Johnny Gargano.