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In sports, out of bounds (or out-of-bounds) refers to being outside the playing boundaries of the field. Due to the chaotic nature of play, it is normal in many sports for players and/or the ball to go out of bounds frequently during a game. The legality of going out of bounds (intentionally or not), and the ease of prevention, vary by sport. In some cases, players may intentionally go or send the ball out of bounds when it is to their advantage. ==Baseball== In baseball, there are two ways for a batted ball to be out-of-bounds. If a ball is hit between the foul lines and exits the field of play, it is a home run, at the batter and teammates who are on base run to home plat and score a point for their team. If the ball is hit outside the foul lines (such as to the side or behind the batter), it is a foul ball, and is equivalent to a strike. The foul ball bounds do not apply to fielders, who are allowed to try to catch a foul ball, which would put the batter out. While the rules of baseball define the angle of the foul lines, there are no set rules as to how large a field should be, and it varies from baseball field to baseball field. Whether fielders can attempt to catch balls in dugouts or the stands varies. In major league baseball, it is possible in baseball for a dugout to be a factor in play. MLB rule 6.05(a) states that a fielder may reach into a dugout to catch a fly ball as long as one or both feet is on or over the playing field, and does not have a foot on the ground in the dugout when making the catch. MLB universal ground rules state that the player may subsequently enter the dugout after making the catch if his momentum is carrying him that way, but if he falls in the dugout as a result, the catch is allowed but baserunners advance in accordance with Rule 7.04(c).() A live ball entering a dugout becomes dead and the batter-runner and any baserunners advance in accordance with Rule 7.04(c). However, a live ball bouncing off a dugout railing, if present, is still in play (unless a foul ball). Due to the dugouts' location in foul territory, live balls entering dugouts usually only occur after an errant throw by the defensive team. Individual leagues at levels below MLB are free to set their own rules governing the dugouts as is appropriate for their league's ballparks and playing level. For example, the rule governing reaching into dugouts to catch fly balls would not apply in leagues where the dugouts are separated from the field by a chain-link fence that is taller than the players. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「out of bounds」の詳細全文を読む スポンサード リンク
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