Keeping an eye on your opponents' moves is essential in Master Rummy Gold 51 because it enables you to predict their tactics & modify your own accordingly. An opponent's hand composition and potenrymmy goldtial meld targets are revealed by every move they make, including drawing from the pile and picking up from the discard. An opponent is probably trying to finish sets or sequences involving particular cards if, for example, they routinely remove particular suits or ranks from the discard pile. You can use this information to guide your own choices regarding which cards to keep or discard.