Paying attention to the cards that your opponents take up from the discard pile is a crucial part of analyzing their moves. One way to tell if an opponent needteen teen pattis a card for their hand is if they pick up one that you have just discarded. This can help you decide which cards to keep or discard by providing you with important information about their hand. You can also find chances to prevent your opponents from finishing sets & sequences by keeping an eye on their movements.