Keeping an eye on your opponent's moves is another crucial component of strategy. Observe the cards they pick up or discard, as this can reveal important information abouone 21 slotst the makeup of their hand. You may be able to modify your strategy if you observe that your opponent discards particular cards a lot, as this could mean that they are not pursuing it. If your opponent declares rummy before you do, you can lessen the number of points you lose by keeping a balanced hand with both high and low-value cards.