Just a thought, but if both Mo'unga and Barrett were injured the game before a QF, but both were deemed to be likely to be fit for a semi final if we qualified, what would stop the selectors from replacing an outside back for Josh Ioane, so he could play 10 in the QF but the other two would still be eligible for games after that?
I would have thought you can only replace due to injury
Injuries don't need to be independently verified though. Moreover, what's stopping a player saying they are having mental health issues or family problems so they can be replaced? As far as I can see the AB's could bring in Josh Ioane in an emergency without necessarily having to replace Mo'unga or BB.
Agreed. That's why finding those tournament regulations woudl be nice. @Damo can you help?
Not really. I can't find the official regs anywhere. Even the World Rugby page with the Tournament Rules doesn't have the rules. https://www.rugbyworldcup.com/tournament-rules
For what it is worth; in 2015 (and I seem to recall earlier as well) the rule was that you had to wait 48 hours between losing a player and the replacement being able to play. https://www.walesonline.co.uk/sport/rugby/rugby-news/strict-48-hour-rule-warren-9968431 (Apologies for the link, but that was what I found)
I would be amazed if there wasn't independent verification of injuries, I imagine personal/family issues would be on a case by case basis.
There is such a thing as a gentleman's code still in rugby I think. I'd be surprised if many coaches would ask a player to pretend to be injured to support a strategic switch. There are some unscrupulous people, but not as many as you'd think - surely (?)