Line drive

In baseball, a line drive is a type of batted ball, sharply hit, and on (or slightly above) a level trajectory. The threshold between a line drive (also sometimes called a liner or frozen rope) and a fly ball can be subjective.

Line drives can be dangerous to baseball players and spectators. For example, on July 22, 2007, Tulsa Drillers first base coach Mike Coolbaugh was killed in a line drive accident at an away game with the Arkansas Travelers. Though the ball hit his neck, his death was the impetus for base coaches to start wearing helmets.^[1]

References

↑ Associated Press (8 November 2007). "Coolbaugh's death prompts MLB to adopt helmets for base coaches". ESPN. Retrieved 14 September 2014.

Baseball concepts

Field	Backstop Baseball diamond Batter's box Batter's eye Bullpen Dugout Foul territory Foul pole Infield On-deck circle Outfield Warning track

Equipment	Ball Bat Batting cage Batting glove Batting helmet Cap Doughnut Glove (defense) Pitching machine Protective cup Shin guard Stirrups Uniform Uniform number

Game process	Batting order Extra innings Innings On-deck Out Run Seventh-inning stretch

Batting	At bat Baltimore chop Chinese home run Batting count Bunt Checked swing Cleanup hitter Designated hitter Double Double switch Foul ball Foul tip Grand slam Ground rule double Hit Hit and run Hit by pitch Hitting for the cycle Home run Infield hit Inside-the-park home run Leadoff hitter Lefty-righty switch Line drive Moonshot Plate appearance Platoon system Pull hitter Sacrifice bunt Sacrifice fly Single Slap bunt Strikeout Strike zone Sweet spot Triple Walk Walk-off home run

Pitching	Balk Beanball Breaking ball Brushback pitch Changeup Curveball Fastball Full count Inside pitching Knuckleball No-hitter Passed ball Perfect game Pitch count Pitchout Quick pitch Shutout Slider Spitball Strikeout Striking out the side Time of pitch Wild pitch

Baserunning	Balk Bases loaded Caught stealing Contact play Left on base Safe Scoring position Slide Small ball Squeeze play Stolen base Tag up

Fielding	Appeal play Assist Catch Defensive indifference Double play Error Fielder's choice Force play Fourth out Hidden ball trick Infield shift In-between hop Pickoff Rundown Tag out Triple play Unassisted triple play Wall climb Wheel play

Miscellaneous	Bench jockey Bench-clearing brawl Blocking the plate Dead ball Golden sombrero Ground rules Baseball jargon In flight Infield fly rule Interference Pepper Shagging Slump Uncaught third strike

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