After being concussed one of the most important things is to get blood to the brain. On the other hand if there is trauma to soft tissue it's important to lessen blood flow (at least initially) to the damaged area. This is why it would only benefit a fighter to be held upside down between rounds. If a fighter has a bad cut or a hematoma on their head/neck this wouldn't help. But, 99% of fights don't have this scenario. Not all corners could accomplish this, yes, I know that. Matt Hume would have no issue with M Mouse. Matt would have Mouse inverted in a split second of the round ending. With Stefan Struve, however,.... good luck. He'd have to put a team together. A real tall team. Plus he is susceptible to bleeding. So, never mind about Struve. So, any fighter with enough energy to walk to their corner and that is under 7 foot tall needs to be inverted and they would greatly benefit.