In baseball box scores and advanced analytics, CS stands for caught stealing. This statistic tracks every time a baserunner attempts to advance to the next base—usually second or third—and is tagged out by the defensive team before arriving safely.
Beyond a simple box score marker, caught stealing acts as a core metric for evaluating catcher defense and baserunner aggression. When you see a catcher throw out a runner trying to swipe second base, the official scorer charges the runner with a CS and credits the catcher with the defensive play. It's a fundamental indicator of how well a backstop controls the running game.
The Core Mechanics of Caught Stealing
A caught stealing event doesn't happen in a vacuum. It requires precise coordination between the pitcher, the catcher, and the infielders.
When a runner takes off from first base toward second, the play unfolds through a sequence of split-second actions:
- The Read: The catcher instantly recognizes that the runner is breaking for the next base on the pitch.
- The Catch: The catcher receives the pitch cleanly, transitioning the ball from the mitt to a throwing grip in one fluid motion.
- The Pop: The catcher pops out of the crouch, clearing any interference from the batter or umpire.
- The Throw: A strong, accurate throw is fired down to the covering infielder, typically the shortstop or second baseman.
- The Tag: The infielder applies the tag to the sliding runner before they touch the base.
If the runner is tagged out before touching the bag, the official scorer records a CS. If the runner beats the throw, it's marked as a stolen base (SB). According to official guidelines maintained by MLB, both metrics live side-by-side in team and player statistics.
How CS Shapes Modern Baseball Analytics
While casual fans look at raw home run totals, front offices and managers pay close attention to advanced metrics derived from caught stealing data. The most prominent of these is CS% (caught stealing percentage).
To calculate a catcher's caught stealing percentage, you divide the number of runners they threw out by the total number of base-stealing attempts against them. For example, if 40 runners try to run on a catcher and they throw out 16 of them, their CS% is 40 percent.
In Major League Baseball, a league-average caught stealing percentage typically hovers around 25 to 30 percent, though changes to base sizes and pickoff rules have shifted these dynamics in recent seasons. Elite defensive catchers often push past 35 or 40 percent, completely altering how opposing managers run their offenses.
Another related advanced metric is Stolen Base Runs Saved (Rsb), which measures how many runs a catcher prevents compared to an average defender by keeping runners glued to their bases. Preventing a runner from getting into scoring position at second base dramatically lowers the opponent's expected run value for that inning.
Common Misconceptions About Caught Stealing
Many viewers mistakenly believe that every caught stealing is solely the catcher's responsibility. In reality, stopping a stolen base is a team effort.
The pitcher plays a massive role in whether a caught stealing occurs. If a pitcher takes too long to deliver the ball to home plate—known as having a slow delivery or a high time-to-plate metric—even a catcher with a weak arm won't have enough time to throw the runner out. Pitchers must control the running game by varying their looks, utilizing slide steps, and keeping runners close to the bag.
Another error is ignoring game situations. A runner might attempt a steal in a late-inning blowout or during a hit-and-run play where the batter fails to make contact. While these situations still result in a standard box score entry, analysts look beyond the raw numbers to evaluate the true defensive value of the play.
You can learn more about how advanced tracking systems measure these defensive contributions through resources like Baseball Reference.
Frequently Asked Questions
Is a caught stealing charged as an out against the batter?
No. The out is recorded against the individual baserunner who attempted the steal. The batter's plate appearance continues unless the pitch resulted in a strikeout or the third out of the inning.
Does a pickoff count as a caught stealing?
No. If a pitcher or catcher throws behind a runner who is straying too far off the base and tags them out before they attempt to advance, it's scored as a pickoff (PO), not a caught stealing.
How do stolen base rule changes affect CS numbers?
Recent rules like larger bases and limits on pitcher pickoff attempts have increased overall stolen base attempts across professional baseball. As a result, catchers face more pressure, making efficient throw-downs more valuable than ever.
Can a defensive substitution impact team caught stealing stats?
Yes. Teams often manage late-game defensive matchups by bringing in backup catchers known for elite arm strength and quick pop times to shut down opposing base-runners in tight contests.
