Making the choice to discard or keep a card is one of the most important parts of playing Roz Rummy. Because discarding a card can give your opponents opportunities, it's important to think carefully about gamesdlwhat you're giving up. Tossing cards that could help others finish their melds is a bad idea if you have been collecting cards in a certain suit or rank. For instance, you might want to hold onto your hearts longer if you see an opponent removing hearts from the discard pile while you are holding onto multiple hearts. On the other hand, it's equally critical to understand when to let go of particular cards.