Guide
What is a balk in baseball? Pitcher rules explained
A balk is an illegal move by the pitcher while runners are on base, and in standard rules every runner is awarded one base when it is called. The rule exists so pitchers cannot trick runners with a deceptive motion. This guide explains the common balks, what happens next, and the other pitcher rules families hear about.
What a balk actually is
A balk is an illegal action by the pitcher that the umpire judges to be deceptive or unfair to the runners. Under standard baseball rules, when a balk is called with runners on base, the ball is dead and each runner advances one base. The batter stays at the plate with the same count.
The idea behind the rule is simple. A runner leaning off first base is trying to read the pitcher. If the pitcher could start a pitching motion and then throw to a base instead, or fake a throw, the runner could be caught off guard no matter how carefully he watched. The balk rule gives the runner a fair signal: once the pitcher commits to a pitch, he has to throw it, and once he commits to a throw, he has to make it.
Because the rule is about runners, it only comes into play when someone is on base. Many younger divisions do not allow runners to leave the base until the ball is hit or crosses the plate, so balks may not exist at all there. That is a good thing to confirm with your league.
The most common ways to balk
Rulebooks list many specific balks, but a handful cause most of the calls. Wording and details can differ by league, so treat this as the general picture.
| Balk | What it looks like |
|---|---|
| Starting and stopping the delivery | The pitcher begins the pitching motion and then stops without finishing the pitch or throwing to a base. |
| Fake throw to first base | In standard rules, the pitcher pretends to throw to first without actually stepping toward it and throwing. |
| No complete stop in the set position | Pitching from the set, the pitcher must pause briefly before delivering. Pitching without that pause is a balk. |
| Dropping the ball | The ball slips out of the pitcher's hand while he is on the rubber and in his pitching motion. |
| Throwing to an unoccupied base | Throwing to a base with no runner and no real play is generally a balk. |
| Not stepping toward the base | A pitcher on the rubber who throws to a base must step directly toward that base first. |
| Delivering while not facing the batter | The pitcher throws a pitch without being in a legal position facing home plate. |
Notice that most of these are about commitment. The pitcher is allowed to do many things, such as throw over to a base or deliver the pitch, but he cannot pretend to do one thing and then do another while standing on the rubber.
Windup versus set position
Pitchers use two basic starting positions. In the windup, the pitcher stands facing the batter and uses a larger motion. It is mostly used when the bases are empty. In the set position, also called the stretch, the pitcher stands sideways, holds the ball in both hands in front of his body and comes to a brief stop before pitching. It is mostly used with runners on, because it is quicker to the plate.
Most balks happen from the set position, because the pause and the different motion leave more room for a mistake. A pitcher who rushes the pause or flinches with a shoulder or knee can balk without realizing it. Coaches usually teach the set position slowly and on purpose, especially when a young pitcher first starts facing runners. If your child pitches, pitching basics for parents covers the fundamentals that make a clean delivery easier.
What happens after a balk is called
- The umpire calls it. The umpire points and says "balk." Play stops, and the ball is dead.
- Every runner moves up one base. A runner on third scores. A runner on first goes to second. The batter does not move.
- The count stays. The batter keeps the same balls and strikes as before the balk.
- The play may continue if the batter reaches. In standard rules, if the pitch is thrown and the batter reaches first base and all runners advance at least one base anyway, the play can stand and the balk is ignored.
A balk is not an out and not a ball or strike. If you are scoring, the scorebook notes it as a balk and runners advance one base. See how to keep score for the symbols.
Illegal pitches with the bases empty
With nobody on base, a pitcher cannot balk because there is no runner to deceive. A rule violation in that situation, such as a pitch thrown without the pitcher being in the proper position, is generally called an illegal pitch. In standard rules, the umpire calls it a ball, unless the batter swings and gets on base anyway.
Other pitcher rules families hear about
- The pitching rubber. A pitcher must have a foot on the rubber to deliver the pitch. Stepping off the rubber with the ball first makes him a fielder, which lets him throw to bases without it counting as a balk. Details vary by level.
- Pitch counts and rest. Many youth leagues limit how many pitches a young player can throw and require rest days. These are about arm health, not game strategy. Read youth baseball pitch count rules and arm care for young pitchers.
- Hit batters. A pitch that hits a batter who tried to avoid it sends him to first base. Intentionally throwing at a batter is against the rules and umpires can warn or remove a pitcher.
- Time between pitches. Some leagues have timing rules for when a pitcher must deliver. These change often at the professional level, so ask about your own league.
- Substitutions. When a pitcher is replaced, leagues often set how many warm-up pitches the new pitcher gets and whether a removed pitcher may return. Both vary.
How balks work in youth baseball
Youth leagues handle balks very differently. Some use the full rule, some use a simplified version, and many younger divisions do not call balks at all because runners cannot lead off or steal. Others call a warning first for beginners and only award bases once pitchers are older and more experienced. Because rulebook language is long and specific, nobody remembers every balk, including many umpires, so a single call you disagree with is not a scandal.
If your child is about to start pitching, ask the coach or league how balks are handled at their level. Also see moving from coach pitch to kid pitch for what usually changes when pitchers take over.
Common misunderstandings and what to do
- "A balk is the umpire punishing the pitcher." It is a protection for runners, not a penalty for being bad.
- "The pitcher can never fake to first." Pitchers are allowed to throw to first, and in many rulebooks they may fake a throw to second or third. A fake to first without throwing is the one that usually balks. Rules differ, so check yours.
- "A balk means the runners are safe forever." It only moves each runner up one base. Runners can still be out on other plays.
- Yelling at the umpire. Balks are judgment calls and hard to see from the stands. Let the coach raise any question. See sideline etiquette and umpire respect.
For a fuller list of rules that trip up newcomers, see confusing baseball rules explained.
In BlackForge Sports: BlackForge Sports is live for youth baseball today. Every scored game becomes a live score with a box score and play-by-play, so you can see exactly how each run, out and pitching change happened. Pitch counts and arm-care tracking help families keep an eye on young arms, player cards build from scored games, and parents control their child's profile. Get early access →
Sources and further reading
- Official Baseball Rules, 2026 Edition Major League Baseball
- MLB, USA Baseball Announce Updates to Pitch Smart Program USA Baseball
- Baseball - Rules, Strategy, Stats Encyclopaedia Britannica
Links open in a new tab. Quotations are short excerpts, included with attribution for commentary. BlackForge Sports is not affiliated with or endorsed by the people or organizations named.
Frequently asked questions
What is a balk in baseball in simple terms?
A balk is an illegal move by the pitcher when runners are on base, such as starting a pitch and then stopping. In standard rules every runner moves up one base.
What happens to the batter when a balk is called?
The batter stays at the plate with the same count, and the ball is dead. Only the runners advance.
Can you balk with no runners on base?
No. A balk only applies when runners are on, so a similar mistake with the bases empty is usually called an illegal pitch, which counts as a ball.
Are balks called in youth baseball?
It depends on the league and the age level. Younger divisions often do not call them at all, and others give warnings first, so ask your league.
Why do pitchers have to stop in the set position?
The pause keeps the pitcher from using a quick, deceptive motion to fool runners. Pitching without a brief stop is a common balk.