What is a Stolen Base

When a baserunner advances to the next base while the pitcher is delivering the ball to home plate.

A stolen base occurs when a baserunner successfully advances to the next base during a pitch, without the benefit of a hit, walk, or error. It is one of the primary tools for manufacturing runs in baseball, rewarding speed, instinct, and the ability to read a pitcher's movements.

How a Stolen Base Works

A stolen base attempt begins when a runner on base decides to break toward the next base as the pitcher delivers the ball to home plate. For the steal to be successful, the runner must reach the next base before the catcher can catch the pitch and throw the ball to the fielder covering that base.

The most common stolen base is second base — a runner on first stealing second. Stealing third and home are rarer but high-value plays. A steal of home is considered one of the most exciting plays in baseball.

The Catcher's Role

The catcher is the primary defender against stolen bases. A catcher's pop time — the time from when the ball hits the glove to when it arrives at second base — is one of the most important defensive metrics. Elite catchers can post pop times under 1.9 seconds, which is fast enough to throw out most base stealers.

Stolen Base Success Rate

Not all stolen base attempts succeed. A failed attempt results in a caught stealing (CS), which is an out and eliminates the baserunner. Base-stealing strategy depends heavily on a runner's success rate — generally, a runner must succeed more than 70% of the time to make stealing bases a net positive for their team, based on run expectancy models.

Stolen Base Records

Rickey Henderson is the all-time MLB stolen base leader with 1,406 career stolen bases — a record considered nearly unbreakable. He also holds the single-season record with 130 stolen bases in 1982. Lou Brock (938) and Ty Cobb (897) are also among the all-time leaders.

In the modern era, players like Billy Hamilton and Trea Turner have led the league in stolen bases, but the overall rate of stolen base attempts dipped through the 2010s as analytics favored avoiding outs. Rule changes in 2023 — including larger bases and limits on pickoff attempts — sparked a renewed surge in stolen bases across MLB.

Stolen Bases in Strategy

Base stealing is most effective when combined with a good eye for pitcher tendencies. Baserunners study a pitcher's delivery time (the time from the start of the windup or stretch to when the ball reaches the plate) and look for tells — subtle cues that reveal when a pitcher is going home versus throwing a pickoff.