One dynamic that can change dramatically in sport is the concept of the home-field advantage, in which perceived demands and resources seem to play a role. ❷ Under normal circumstances, the home ground would appear to provide greater perceived resources (fans, home field, and so on). ❸ However, researchers Roy Baumeister and Andrew Steinhilber were among the first to point out that these competitive factors can change; for example, the success percentage for home teams in the final games of a playoff or World Series seems to drop. ❹ Fans can become part of the perceived demands rather than resources under those circumstances. ❺ This change in perception can also explain why a team that's struggling at the start of the year will often welcome a road trip to reduce perceived demands and pressures.