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Baseball · Official Rules of Baseball

Law 10: Base Running

3 parts · 6 tests · 60 facts · updated 27 October 2026 · markdown

The order of the bases, how a batter becomes a runner, the right to a base, two runners on one base, bases awarded for fielders' acts and balls out of play, the slide rule, and the ways a runner is out.

10.101Becoming a Runner

The order of the bases, fair hits, dropped third strikes, ground-rule awards and other ways to reach base.

Test 1The order of the bases and becoming a runnerTake a test

  1. Advancing, a runner touches first, second, third and home in order; when obliged to return with the ball in play, he retouches them in reverse.

    Source: WBSC ORB 2025-2026, Rule 10.1 · applied

  2. The batter becomes a base runner immediately after he makes a fair hit.

    Source: WBSC ORB 2025-2026, Rule 10.2.1 · recall

  3. A fair fly deflected by a fielder into the stands or over the fence in foul territory entitles the batter to second base.

    Source: WBSC ORB 2025-2026, Rule 10.2.9 · applied

  4. A fair ball that bounds into the stands after touching the ground entitles the batter and runners to two bases.

    Source: WBSC ORB 2025-2026, Rule 10.2.6 · applied

  5. A fair ball that passes through or under a fence, or sticks in it, entitles the batter and the runners to two bases.

    Source: WBSC ORB 2025-2026, Rule 10.2.7 · applied

  6. Deflected over in fair territory, the fly is still a home run, as long as it passes the 250 ft mark.

    Source: WBSC ORB 2025-2026, Rule 10.2.9 · applied

  7. If the pitch is ball four, the batter is awarded first base and credited with being hit by the pitch; the ball is dead.

    Source: WBSC ORB 2025-2026, Rule 10.2.11.2 · applied

  8. Returning, a runner retouches the bases in reverse order.

    Source: WBSC ORB 2025-2026, Rule 10.1 · recall

  9. A batter who does not run on an uncaught third strike is declared out once he leaves the dirt circle round home plate.

    Source: WBSC ORB 2025-2026, Rule 10.2.2 · applied

  10. A fair fly that leaves the field at less than 250 ft (76.2 m) from home plate gives the batter second base only.

    Source: WBSC ORB 2025-2026, Rule 10.2.5 · applied

Test 2More ways to reach baseTake a test

  1. On an uncaught third strike the batter becomes a runner if first base is empty, or if it is occupied with two out.

    Source: WBSC ORB 2025-2026, Rule 10.2.2 · applied

  2. A pitch that touches the ground and then the batter still entitles him to first base.

    Source: WBSC ORB 2025-2026, Rule 10.2.3 · applied

  3. WBSC calls it a strike when the batter moves to get hit on purpose, wherever the pitch is, and he is not awarded first base.

    Source: WBSC ORB 2025-2026, Rule 10.2.11.1 · applied

  4. A fair ball that touches an umpire or runner after passing a fielder other than the pitcher stays in play.

    Source: WBSC ORB 2025-2026, Rule 10.2.4 · applied

  5. If a defensive player interferes with the swing or prevents the batter from striking at a pitch, he becomes a runner with first base.

    Source: WBSC ORB 2025-2026, Rule 10.2.12 · applied

  6. The batter becomes a runner after four balls are called or when he is awarded an intentional base on balls.

    Source: WBSC ORB 2025-2026, Rule 10.2.10 · recall

  7. When a fair ball touches an umpire or a runner on fair territory before touching a fielder, the batter becomes a runner.

    Source: WBSC ORB 2025-2026, Rule 10.2.13 · applied

  8. One base for a pitch out of play, two for a bounding fair ball into the stands, three for a thrown glove, four for a home run.

    Source: WBSC ORB 2025-2026, Rule 10.4.7 · recall

  9. A swung third strike on a bounced pitch cannot be caught, so the batter can run and must be put out like any batter-runner.

    Source: WBSC ORB 2025-2026, Rule 10.2.3 · applied

  10. The catcher dropped it with first base free, so the batter must still be put out; he is not out yet.

    Source: WBSC ORB 2025-2026, Rule 10.2.2 · applied

10.102Bases and Awards

Holding a base, two runners on one base, thrown gloves and caps, balls out of play and dead-ball awards.

Test 1Holding a base, and bases awardedTake a test

  1. A runner acquires the right to an unoccupied base by touching it before he is out; he holds it until he is out or forced off.

    Source: WBSC ORB 2025-2026, Rule 10.3.1 · recall

  2. A glove deliberately thrown at a fair ball and touching it gives three bases; the ball is in play and the batter may try for home at his own risk.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.3 · recall

  3. Deliberately touching a thrown ball with a detached cap, mask or part of the uniform gives two bases; the ball stays in play.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.4 · recall

  4. There is no penalty when a glove flies off in an obvious effort to make a play, or is knocked off by the ball.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.5 · applied

  5. A thrown ball into the stands or a bench, or over or under a fence, gives two bases; the ball is dead.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.7 · recall

  6. A pitched ball that goes into the stands, a bench or through or over a fence or backstop gives one base; the ball is dead.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.8 · recall

  7. When the catcher or a fielder interferes with the batter during a steal attempt, the runner advances without liability to be put out.

    Source: WBSC ORB 2025-2026, Rule 10.4.5 · applied

  8. Three bases are awarded but the ball is live, so the batter-runner may go on towards home at his own risk.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.3 · recall

  9. One base, two bases, three bases, and a home run for a ball that would have left the field in flight.

    Source: WBSC ORB 2025-2026, Rule 10.4.7 · recall

  10. Throwing a glove at a fair ball and touching it gives three bases; the ball remains in play.

    Source: WBSC ORB 2025-2026, Rule 10.4.7.3 · applied

Test 2Two runners on a base and dead-ball awardsTake a test

  1. Two runners may not occupy a base; when both are tagged, the following runner is out and the preceding one keeps the base.

    Source: WBSC ORB 2025-2026, Rule 10.3.2 · applied

  2. When the following runner is forced to that base, he is entitled to it and the preceding runner is out when tagged.

    Source: WBSC ORB 2025-2026, Rule 10.4 · applied

  3. On a balk the ball is dead and every runner advances one base.

    Source: WBSC ORB 2025-2026, Rule 10.5.3 · applied

  4. When a ball is illegally batted, the ball is dead and runners return.

    Source: WBSC ORB 2025-2026, Rule 10.5.4 · applied

  5. Any legal pitch that touches a runner trying to score makes the ball dead and runners advance.

    Source: WBSC ORB 2025-2026, Rule 10.5.8 · applied

  6. A foul tip off the umpire is dead and cannot be caught for an out, even if a fielder catches the rebound.

    Source: WBSC ORB 2025-2026, Rule 10.5.7 · applied

  7. A pitched ball deliberately touched with a detached cap, mask or part of the uniform: the ball is in play and runners advance from where they were.

    Source: WBSC ORB 2025-2026, Rule 10.4.6 · applied

  8. No force here: the earlier runner keeps third, the later one is tagged out.

    Source: WBSC ORB 2025-2026, Rule 10.3.2 · recall

  9. Both runners move up together: second to third, first to second.

    Source: WBSC ORB 2025-2026, Rule 10.5.3 · recall

  10. Third base belonged to the runner who was there first.

    Source: WBSC ORB 2025-2026, Rule 10.3.2 · applied

10.103Slides and Outs

The bona fide slide, the base path, passing runners, coaches and other outs.

Test 1The slide rule and outs on the basesTake a test

  1. A bona fide slide begins before the base, aims to reach and stay on it, and stays within reach without changing course to hit a fielder.

    Source: WBSC ORB 2025-2026, Rule 10.6 · recall

  2. A runner who runs more than three feet from his base path to avoid a tag is out, unless avoiding a fielder fielding a batted ball.

    Source: WBSC ORB 2025-2026, Rule 10.7.1 · recall

  3. After touching first, obviously abandoning the effort to touch the next base makes the runner out.

    Source: WBSC ORB 2025-2026, Rule 10.7.2 · applied

  4. A batter-runner who overruns or overslides first and returns at once, with no attempt to advance, cannot be tagged out.

    Source: WBSC ORB 2025-2026, Rule 10.7.4 · applied

  5. A runner who passes a preceding runner before that runner is out is himself out.

    Source: WBSC ORB 2025-2026, Rule 10.7.9 · applied

  6. Running the bases in reverse order to confuse the defence or make a travesty of the game: Time is called and the runner is out.

    Source: WBSC ORB 2025-2026, Rule 10.7.10 · applied

  7. The runner on third is declared out for his coach's interference.

    Source: WBSC ORB 2025-2026, Rule 10.7.15 · applied

  8. Once a forced runner touches the base he was forced to, the force is removed; overrunning it, he must be tagged to be put out.

    Source: WBSC ORB 2025-2026, Rule 10.7.6 · applied

  9. Each condition of the slide rule has to be met; a slide that meets them is legal even if contact follows.

    Source: WBSC ORB 2025-2026, Rule 10.6 · recall

  10. A coach who touches or holds a runner and physically helps him return to or leave a base causes that runner to be out.

    Source: WBSC ORB 2025-2026, Rule 10.7.14 · applied

Test 2More ways a runner is outTake a test

  1. A runner is out when a member of his team, other than a runner, hinders a fielder's attempt to field a thrown ball in a play on him.

    Source: WBSC ORB 2025-2026, Rule 10.7.13 · applied

  2. A runner touched by a fair ball before it goes through or by an infielder is out; the ball is dead and only forced runners advance.

    Source: WBSC ORB 2025-2026, Rule 10.7.7 · applied

  3. A runner touching his base when hit by an Infield Fly is not out, although the batter is out.

    Source: WBSC ORB 2025-2026, Rule 10.7.7 · applied

  4. A batter-runner whose thrown bat interferes with a defensive player making a play is out.

    Source: WBSC ORB 2025-2026, Rule 10.7.16 · applied

  5. Deliberately knocking the ball from a fielder's hand makes the runner out and the ball immediately dead.

    Source: WBSC ORB 2025-2026, Rule 10.7.17 · applied

  6. A batter or runner just put out who interferes with a play being made on a runner causes that runner to be out.

    Source: WBSC ORB 2025-2026, Rule 10.7.18 · applied

  7. If the runner makes no attempt to return, he is out when a fielder holding the ball touches home plate and appeals.

    Source: WBSC ORB 2025-2026, Rule 10.7.12 · applied

  8. The catcher need not chase him: touching home with the ball and appealing is enough when the runner does not try to return.

    Source: WBSC ORB 2025-2026, Rule 10.7.12 · applied

  9. Straight back, no feint towards second: that is what keeps him safe.

    Source: WBSC ORB 2025-2026, Rule 10.7.4 · recall

  10. A runner who does not make a bona fide slide and initiates contact to break up a double play is called for interference.

    Source: WBSC ORB 2025-2026, Rule 10.6 · applied

Sources

WBSC Official Rules of Baseball 2025-2026, Rule 10 (paraphrased in original wording; original questions authored from the Rules, not reproduced)

  • WBSC ORB 2025-2026, Rule 10.2.23
  • WBSC ORB 2025-2026, Rule 10.4.7.33
  • WBSC ORB 2025-2026, Rule 10.3.23
  • WBSC ORB 2025-2026, Rule 10.63
  • WBSC ORB 2025-2026, Rule 10.12
  • WBSC ORB 2025-2026, Rule 10.2.92
  • WBSC ORB 2025-2026, Rule 10.2.32
  • WBSC ORB 2025-2026, Rule 10.4.72
  • WBSC ORB 2025-2026, Rule 10.5.32
  • WBSC ORB 2025-2026, Rule 10.7.42
  • WBSC ORB 2025-2026, Rule 10.7.72
  • WBSC ORB 2025-2026, Rule 10.7.122
  • WBSC ORB 2025-2026, Rule 10.2.11
  • WBSC ORB 2025-2026, Rule 10.2.61
  • WBSC ORB 2025-2026, Rule 10.2.71
  • WBSC ORB 2025-2026, Rule 10.2.11.21
  • WBSC ORB 2025-2026, Rule 10.2.51
  • WBSC ORB 2025-2026, Rule 10.2.11.11
  • WBSC ORB 2025-2026, Rule 10.2.41
  • WBSC ORB 2025-2026, Rule 10.2.121
  • WBSC ORB 2025-2026, Rule 10.2.101
  • WBSC ORB 2025-2026, Rule 10.2.131
  • WBSC ORB 2025-2026, Rule 10.3.11
  • WBSC ORB 2025-2026, Rule 10.4.7.41
  • WBSC ORB 2025-2026, Rule 10.4.7.51
  • WBSC ORB 2025-2026, Rule 10.4.7.71
  • WBSC ORB 2025-2026, Rule 10.4.7.81
  • WBSC ORB 2025-2026, Rule 10.4.51
  • WBSC ORB 2025-2026, Rule 10.41
  • WBSC ORB 2025-2026, Rule 10.5.41
  • WBSC ORB 2025-2026, Rule 10.5.81
  • WBSC ORB 2025-2026, Rule 10.5.71
  • WBSC ORB 2025-2026, Rule 10.4.61
  • WBSC ORB 2025-2026, Rule 10.7.11
  • WBSC ORB 2025-2026, Rule 10.7.21
  • WBSC ORB 2025-2026, Rule 10.7.91
  • WBSC ORB 2025-2026, Rule 10.7.101
  • WBSC ORB 2025-2026, Rule 10.7.151
  • WBSC ORB 2025-2026, Rule 10.7.61
  • WBSC ORB 2025-2026, Rule 10.7.141
  • WBSC ORB 2025-2026, Rule 10.7.131
  • WBSC ORB 2025-2026, Rule 10.7.161
  • WBSC ORB 2025-2026, Rule 10.7.171
  • WBSC ORB 2025-2026, Rule 10.7.181