[quote] If you are on your first game of the week or playing on a card with a loss recorded on it, you will be placed in the Practice pool. The Practice pool utilizes weekly performance and connection-based matchmaking. [b]If you are playing on Flawless card or playing with someone on a Flawless card, you will be placed in the Challenger pool. The Challenger pool utilizes only connection-based matchmaking. [u]Matchmaking no longer filters by wins on a card[/u]. [/b][/quote] https://www.bungie.net/7/en/News/article/season-deep-update-7-1-0