The infield fly is defined by four relevant features: (1) the significant disparity of costs and benefits inherent in that play that overwhelmingly favors one team and disfavors the other team; (2) the favored team has total control over the play and the other side is powerless to stop or counter the play; (3) the cost-benefit disparity arises because one team intentionally fails (or declines) to do what ordinary rules and strategies expect it to do; and (4) the extreme cost-benefit disparity incentivizes that negative behavior every time the play arises. When all four features are present on a play, a unique, situation-specific limiting rule becomes necessary; such a rule restricts one team’s opportunities to create or take advantage of a dramatic cost-benefit imbalance, instead imposing a set outcome on the play that levels the playing field. The Infield Fly Rule is baseball’s paradigmatic example of a limiting rule. By contrast, no other baseball situation shares all four defining features, particularly in having a cost-benefit disparity so strongly tilted toward one side. The cost-benefit balance in these other game situations is more even; thus, these other situations can and should be left to ordinary rules and strategies.