Great baserunners are not always the fastest players on the field. They are the smartest. The cardinal rules of base running come down to knowing the situation before every pitch, running hard on every ball in play, avoiding needless outs at third base, tagging up correctly, running on contact with two outs, reading the ball in front of you, trusting your base coaches when the play is behind you, taking aggressive but controlled turns, and staying out of the way of batted balls. Coaches repeat these principles at every level because they prevent outs and create extra bases, and they apply whether you are a youth player or a professional.
Rulebook note: base running rules, including tagging up, interference, sliding, and leadoffs, vary between MLB, NCAA, NFHS high school baseball, and youth leagues. Some youth divisions do not allow leadoffs or stealing until the pitch reaches the batter. Always check the current rules for your level.
The ten cardinal rules
- Know the situation. Before every pitch, know the number of outs, the count, the score, the inning, and where the fielders are playing.
- Run hard through first base on every ground ball. Errors and bobbles happen, and hustle turns them into hits.
- Never make the first or third out at third base. With no outs, a runner on second is already in scoring position and can often advance on a ground ball or fly ball. With two outs, a runner on second can usually score on a single. In both cases, the risk of being thrown out at third is rarely worth it.
- Avoid making the final out on the bases. Late in close games, be sure the risk is worth taking before trying for an extra base.
- Tag up on fly balls with fewer than two outs. When a catch is likely, return to the base and be ready to advance after the catch.
- Run on contact with two outs. There is no need to tag up, so run as soon as the ball is hit.
- Read the ball in front of you. On a ground ball hit in front of you, especially to the left side with a runner on second, decide quickly whether you can safely advance.
- Look to your base coach when the play is behind you. Trust the coach’s signals when you cannot see the ball.
- Take good turns at every base. Aggressive turns put pressure on the defense and set up extra bases on misplays.
- Avoid being hit by a batted ball. A runner touched by a fair batted ball before it passes an infielder is generally out, except in specific situations described in the rulebook.
Key situations
| Situation | Typical approach |
|---|---|
| Runner on second, ground ball to the left side | Usually hold unless the ball clearly gets through or the fielder moves away from you |
| Runner on second, ground ball to the right side | Usually advance to third, since the throw is likely going to first |
| Runner on third, fewer than two outs, fly ball to the outfield | Tag up and be ready to score after the catch |
| Runner on first, fly ball in the gap | Go partway, read whether it will be caught, and advance hard if it drops |
| Any runner, two outs | Run on contact |
| Line drive with fewer than two outs | Freeze and make sure it is not caught before advancing |
Leads and secondary leads
A good lead gets you closer to the next base without risking a pickoff. From first base, most runners take a primary lead of a few steps, facing the pitcher with weight balanced and ready to move either way. As the pitch is delivered, runners take a secondary lead, a couple of shuffle steps toward the next base, so they are moving when the ball is put in play. After the pitch reaches the catcher, return promptly if nothing happens. The size of the lead depends on the runner’s speed, the pitcher’s move, and the level of play.
Rounding the bases
Running in a straight line to a base and then turning sharply wastes time. Instead, runners should start a slight banana curve, or arc, before the base so they can hit the inside corner of the bag with either foot and continue in a straight line toward the next base. Touching the inside corner shortens the distance and helps maintain speed. Always keep your eyes on the ball or your base coach as you round the base.
Tagging up
On a fly ball with fewer than two outs, a runner who wants to advance must be touching their original base when the ball is first touched by a fielder, not only when it is caught. The rule allows runners to leave as soon as the fielder touches the ball, even if it bounces around before being secured. Runners often face the outfield from the base, watching the ball, while a base coach helps with timing. Leaving early can result in an appeal and an out, so practice the timing carefully.
Working with base coaches
Base coaches see the whole field and help runners decide when to advance, stop, or slide. The first-base coach helps runners at first with leads, pickoff awareness, and reads on balls hit behind them. The third-base coach directs runners rounding second and third, using clear signals to stop, go, or slide. Runners should know their coaches’ signals and look for them early when the ball is behind them.
Drills to improve base running
- Home-to-first sprints. Practice running hard through the bag and breaking down after it.
- Rounding drills. Run from home to second, focusing on the arc and hitting the inside corner of first base.
- Tag-up timing. A coach tosses fly balls while runners practice leaving on the touch.
- Read drills. Coaches hit ground balls and line drives while runners practice decisions from second base.
- Situational scrimmages. Live play with specific counts, outs, and runners builds game awareness.
Common mistakes
- Not knowing the outs. Many base running errors come from forgetting the number of outs.
- Jogging on routine grounders. Easy plays sometimes become errors, and hustle is rewarded.
- Getting doubled off on line drives. Freeze on line drives with fewer than two outs.
- Leaving early on a tag-up. Wait until the fielder first touches the ball.
- Ignoring the base coach. Look for signals when the play is behind you.
- Wide, slow turns. Rounding bases poorly costs valuable time.
- Taking unnecessary risks late in games. Weigh the situation before trying for an extra base.
- Being hit by a batted ball. Stay aware of the ball’s path to avoid interference.
Frequently asked questions
Why should you never make the third out at third base?
With two outs, a runner on second can usually score on a single, so the small gain of reaching third is rarely worth the risk of ending the inning with a runner thrown out.
When should a runner tag up?
With fewer than two outs on a fly ball that is likely to be caught. The runner must be touching the base when a fielder first touches the ball and can then try to advance.
Should you run on contact with two outs?
Yes. With two outs, any catch ends the inning, so runners should start running as soon as the ball is hit.
