Dwight Gooden sets the baseball record for strikeouts in a season by a rookie with 276, previously set by Herb Score with 246 in 1954. Gooden's 276 strikeouts that season, pitched in 218 innings, set the current record.

Dwight Eugene Gooden, nicknamed "Dr. K" and "Doc", is an American former professional baseball pitcher who played 16 seasons in Major League Baseball (MLB). Gooden pitched from 1984 to 1994 and from 1996 to 2000 for the New York Mets, New York Yankees, Cleveland Indians, Houston Astros, and Tampa Bay Devil Rays. In a career spanning 430 games, he pitched 2,800+2⁄3 innings and posted a win–loss record of 194–112, with a 3.51 earned run average (ERA), and 2,293 strikeouts.

Baseball is a bat-and-ball sport played between two teams of nine players each, taking turns batting and fielding. The game occurs over the course of several plays, with each play beginning when a player on the fielding team, called the pitcher, throws a ball that a player on the batting team, called the batter, tries to hit with a bat. The objective of the offensive team is to hit the ball into the field of play, away from the other team's players, allowing its players to run the bases, having them advance counter-clockwise around four bases to score what are called "runs". The objective of the defensive team is to prevent batters from becoming runners, and to prevent runners advancing around the bases. A run is scored when a runner legally advances around the bases in order and touches home plate.

In baseball or softball, a strikeout occurs when a batter accumulates three strikes during a time at bat. It means the batter is out, unless the third strike is not caught by the catcher and the batter reaches first base safely as a result. A strikeout is a statistic recorded for both pitchers and batters, and is usually denoted by the letter K, or sometimes by the initialism SO. A "strikeout looking"—in which the batter does not swing and the third strike is called by the umpire—may be denoted by an inverted K.