bainsey wroteTaking a step back from the sadness of this issue, is there any procedure at that level of going to a 2-man crew when one goes down (typically to injury)?
Sure...it happens infrequently at the NBA and NCAA level. Heck, even saw an NFL recently where they had to go to 6-man mechanics due to the umpire being injured.
Anyhow, they just go to their prescribed two-man mechanics. Most games aren't going to be stopped just because an official is injured.