[mink]

I invited a player for a tourney starting in 4 minutes, and he accepted. I thanked him by chat, but got no response. About 2 seconds before the start of the tourney, I got the system message that the registration was withdrawn, and I found that my partner was playing in some other tourney. The most likely explanation for this is that he got a sub request from that other tourney and accepted, not aware in this moment that he was already registered for another tourney.

In order to avoid anything like that, I suggest to inhibit any sub request to a player who is registered for a tourney starting before the end of the tourney that makes the request. Maybe additionally, remove a player from any sub list when he registers for a tourney starting in less then 20 minutes.

Karl