So my friend accidentally got kicked out of a ranked team and won 2 games, he rejoined so does he have to play 5 more games or 3 more?
No idea, but it seems like his first two wins would be kept on record. Good luck getting a red to reply here. I'd have him try to send in a support ticket and see if they could answer his question.
© 2014 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.