An opponent may not be pursuing that suit for their melds, for example, if they routinely discard that suit. By using this information, one can obstruct their progress and work toward theigame applicationr own winning hand at the same time. Effectively controlling one's own hand is another essential component of winning at rummy. Melds, or sets or runs of cards, are what players should strive for while watching for possible discards that might help opponents. Holding onto valuable cards until they can be strategically used against opponents or melded is a common strategy.