In baseball, a foul ball is a batted ball that:Settles on foul territory between home and first base or between home and third base, or
Bounces and then goes past first or third base on or over foul territory, or
Has its first bounce occur in foul territory beyond first or third base, or
Touches the person of an umpire or player, or any object foreign to the natural ground, while on or over foul territory. By interpretation, a batted ball that touches a batter while in his batter's box is foul regardless of whether it is over foul territory.
Nook Logan, of the Erie SeaWolves, hitting a foul ball during a game against the Reading Phillies on July 2, 2006.
Umpire Bill Miller gives the hand signal for a foul ball
A baseball field, also called a ball field or baseball diamond, is the field upon which the game of baseball is played. The term can also be used as a metonym for a baseball park. The term sandlot is sometimes used, although this usually refers to less organized venues for activities like sandlot ball.
The baseball diamond of the San Diego Padres' Petco Park in 2005
Kevin Pillar of the Toronto Blue Jays reaches first base safely as Chris Davis of the Baltimore Orioles attempts to scoop a bouncing ball thrown by one of the other infielders during a game in May 2017.
Brian Dozier of the Minnesota Twins leaps over a sliding Jonathan Schoop of the Baltimore Orioles attempting to turn a double play.
David Ortiz (in gray) of the Boston Red Sox stands in the left-handed hitters' batter's box at U.S. Cellular Field against the Chicago White Sox on July 7, 2006.