The two teams are coached by coaching staffs that are selected from two NFL teams. In recent years, the coaching staffs have come from teams who finished near the bottom of the league standings, but whose coaches were not subsequently terminated. Organizers stipulate a number of specific rules for the game, some of which are intended to reduce the chance of injury (e.g. "All blocks below the waist are prohibited"), and others that simplify what the teams need to practice and prepare for (e.g. "Only four rushers allowed, no 5-man pressures or blitzes from secondary permitted"). The game is also the players' first time competing under the slightly different professional rules (e.g. receivers must have both feet inbounds for a legal catch vs. just one foot inbounds in college football).