How do you defend first and third in baseball?

Call the defense before the pitch. With fewer than two outs in a close game, the defense watches the runner on third to protect the run. Anyone who sees the break yells "Home!" With two outs, throw through to second, because a tag there before the run scores ends the inning.

Before every pitch with runners on first and third:

• The catcher knows the call: no throw, a throw to the pitcher, a throw through, a throw to the cut in front of second, or a called throw to third.
• The middle infielders know who takes the bag and who cuts.
• The pitcher knows the plan if the runner on first breaks early.
• The third baseman holds the runner on third close.

The calls are team convention. The rulebook decides when runners may lead, what the pitcher may fake from the rubber, and what fielders and the batter may not do. Where your code allows leads, the play can start before the pitch, which fastpitch never allows.

What the offense runs, and the call that answers it

• Straight steal. The runner on first goes on the pitch, or once it reaches the batter where leads are banned. Mike Roberts, in Baserunning, has that runner check for a middle infielder in the grass in front of second. If one is there, keep running. If not and the catcher throws, stop and draw a rundown so the runner on third can score.
• Delayed steal. The runner on first goes late, often on the catcher's soft throw back to the pitcher. It works even where leads are banned.
• Early break. Where leads are allowed, the runner on first breaks before the pitch, while the pitcher is set, to draw a throw or a long rundown.
• Forced balk. The runner on first walks off or fakes a break to make the pitcher flinch. Where balks are called, the runner on third scores.
• The runner on third's read. A walking lead, then go when the throw is past the pitcher and headed for second. Roberts adds the flight: a flat throw the pitcher could cut means wait, a high, arcing throw means go. That read is Rundown's convention.

Call	Catcher	Middle infield	Pitcher	Use it when
No throw	Holds the ball, looks the runner on third back	The cover still breaks to the bag	Takes the ball back facing the runners	A blocked pitch, or a throw that will not beat the runner
Throw to the pitcher	Fakes to second, then throws firm, about neck high, to the pitcher	The cover takes the bag	Throws home if the runner on third breaks, runs at that runner if caught off, otherwise keeps the ball	12U default with fewer than two outs, or late and close
Throw through	Peeks at third, then throws to the bag	The cover takes it, stepping up to meet it on "Home!" The other middle infielder backs up	Lets it through with a fake cut, then heads toward home	Two outs, a run you can afford, or a slow runner
Cut in front of second	Throws at the cut's glove, on the line to the bag	The cover is on the bag. The cut sets up a few steps in front: throws home on "Home!", or lets it through	Off the throwing line, then heads toward home	14U and up, fewer than two outs
Throw to third	Full-arm fake to second, then throws to the inside of third	The cover still takes second	Ready for a rundown between third and home	A fast runner on third with a big lead. Called by sign, 14U and up
Step-off on an early break	Checks third, ready for a throw home	A middle infielder in front of second takes the throw and runs the runner back toward first	Steps off, looks the runner on third back, throws chest high to that infielder, breaks toward home	The runner on first breaks before the pitch
Fake to third, throw to first	Ready for a throw home	Ready for a rundown	Steps toward third and fakes, then steps toward first and throws	A runner on first leaning to go, 13U and up, where your code allows it

Every row is team convention. On every call, the third baseman stays near the bag, and the corners yell the break word. Center field backs up second, left field third, right field first. When the runner on third breaks, the pitcher backs up home unless holding the ball.

What the rulebook decides

Rules here come from the 2026 Official Baseball Rules (OBR), which Baseball Canada plays in its 2025 edition with its own championship rules and 11U guidelines, plus NFHS (high school) and Little League. We could not read the NFHS or Little League books, which are sold. Their points come from their own pages, state associations and a site that reproduces Little League's text, and the interference, obstruction and overthrow sections cite the OBR alone. Travel organizations set their own rules. No code tells you which call to make.

When runners may lead or leave

In Little League's Major and Minor Divisions, runners cannot lead off. They leave once the pitch reaches the batter (7.13), the umpire flags a runner who goes early, and no balks are called. Leads and balks start at the Intermediate (50/70) Division. Baseball Canada's 11U guidelines also hold runners until the pitch reaches the batter, and the 11U low tier allows no steals. Baseball Canada's 13U play allows leads, and the OBR sets no limit.

Baseball has no look-back rule, so the throw to the pitcher works on the throw alone, as it does in fastpitch.

The fake to third, throw to first depends on the code

Under the OBR, a pitcher touching the rubber may not fake a throw to first or third (6.02(a)(2)). The comment to 6.02(a)(3) names this play: stepping toward third without throwing, then turning to throw to first, is a balk. MLB made the change in 2013, and Baseball Canada plays the same text. The balk scores the runner on third.

NFHS kept the move. Kansas's state association called it legal in 2025 and told pitchers to disengage from the rubber before the move to first. Little League's balk rule names a fake to first, not third (8.05(b)). Perfect Game's youth events also allow it.

A pitcher who steps back off the rubber with the pivot foot is an infielder (OBR 5.07(e)) and may fake to any base under every code here. The same step-off answers the early break and the forced balk, since a flinch toward the plate from the rubber is a balk (6.02(a)(1)).

The catcher catches the pitch behind the plate

Under the OBR, if the runner on third is stealing home and the catcher steps on or in front of the plate without the ball, or touches the batter or the bat, it is a balk and the batter gets first (6.01(g)). If the catcher interferes with the batter while a runner is stealing, that runner gets the base (5.06(b)(3)(D)). Catch the pitch, then throw.

The batter may not hinder the catcher's throw

The batter is out for stepping out of the box or making any other movement that hinders the catcher's play at home (OBR 6.03(a)(3)). The ball is dead and runners go back, but if the catcher still throws out the runner, that out stands. With fewer than two outs, a batter who hinders a play at home on the runner from third makes that runner the out (6.01(a)(3)).

A fielder without the ball cannot block the runner

A fielder who does not have the ball and is not fielding it may not impede a runner. If a play is being made on that runner, as in a rundown, the ball is dead and the runner gets at least one base past the last base touched (OBR 6.01(h)(1)). A catcher without the ball may not block the path to the plate unless fielding the throw (6.01(i)(2)). Catch the ball, then tag.

With two outs, the tag at second can beat the run

A steal of second is a tag play, not a force. If the tag is the third out and comes before the runner on third touches home, the run does not count (OBR 5.08(a)).

A throw out of play costs bases

A catcher's throw out of play awards two bases from where the runners were at the throw (OBR 5.06(b)(4)(G)), so a wild throw to third scores the runner on third.

What the coaching staff decides

Everything in this section is convention. Another sound system works if every player knows it before the pitch.

Call it, and name the cover and the cut

Give the call by sign, and have the cover and the cut answer it. Ron Polk, in Baseball Playbook, signs the defense from the dugout, and the call can change from pitch to pitch.

Rundown's convention keeps normal steal coverage: the second baseman takes the bag against a right-handed hitter, the shortstop against a left-handed hitter. The other middle infielder is the cut, a few steps in front of second on the throwing line, or backs up behind the bag on a throw through. Sam Piraro, writing in the American Baseball Coaches Association's Inside Pitch, keeps the cover on the bag and has that player step up to cut the throw on the break call. Either works if the team knows which one is on.

The catcher peeks at third

Piraro's catcher threatens second while peeking at third, and the third baseman puts both arms up when that runner extends to go.

• The runner on third is back near the base: run the call.
• The third baseman's arms go up: throw to third.
• That runner broke for home on the arm swing: snap the ball to the pitcher to freeze the runner, and give up second.

Hold the ball after a blocked pitch, or when the throw will not get the runner from first and the run matters.

Outs, score and runner speed set the call

• Fewer than two outs, close game: the run outranks the out. Use no throw, the throw to the pitcher or, from 14U, the cut.
• Two outs: throw through if the catcher can reach second on target. Piraro says most teams try first-and-third plays with two outs.
• A run you can afford: throw through. Polk takes an out when ahead.
• Runner speed: Polk favors a throw through against a slow runner on first or a weak one on third. Piraro saves the throw to third for a fast runner there.
• Runner from first caught in a rundown: run that runner back toward first and check third every step. With fewer than two outs, throw home the moment the runner on third breaks. With two outs, finish the tag if it beats that runner home; if not, throw home.

Beat the early break

Rundown's call follows Piraro's "Suffocation." The pitcher steps off and looks the runner on third back, throwing to third if that runner is too far off. Otherwise the pitcher throws chest high to the shortstop, who has moved in front of second, and breaks toward home. The shortstop takes one hard look at third, runs the runner back toward first, and throws home if the runner on third breaks. Do not chase the runner on first with the ball: the pitcher turns away from the run.

One word for the break

Pick one word for the runner on third breaking. Piraro's first baseman yells "Going!" This guide uses "Home!", as the fastpitch guide does. Avoid numbers: in baseball, "Four" can mean the plate on a relay or the second baseman.

Take away the delayed steal

The delayed steal needs a soft return throw and a pitcher who looks away. The catcher checks both runners and returns the ball firmly, and the pitcher catches it facing them. If the runner on third breaks while the return throw is in the air, the pitcher catches it and throws home.

Age the teaching

Leads decide the ladder. Little League's Major Division and Baseball Canada's 11U guidelines have none, so there is no early break to defend; leads and balks arrive at Little League's Intermediate (50/70) Division, Baseball Canada 13U and high school. The ladder is Rundown's coaching judgment:

• 12U: With fewer than two outs, no throw or the throw to the pitcher. With two outs, throw through if the catcher can reach second on target. Firm return throws and one break word. Add the step-off where your code allows leads.
• 14U, or 13U where leads start: Add the cut in front of second, the early-break step-off, the called throw to third, and your code's balk rules. Name the cover and the cut in every call.
• 16U and up: The catcher reads the third baseman and calls from the menu, with the coach's override, and the call can change from pitch to pitch, as Polk's does.

A 10-minute first-and-third block

Use a full infield, a center fielder, a left fielder, and runners in helmets; the catcher wears full gear. A pitcher throws from the mound to a batter in a helmet who does not swing. Piraro runs each play without runners first.

1. Minutes 0 to 2, calls and the word. No runners. The coach names a call, and the catcher runs it. Another coach yells "Home!" at random, and the ball goes home.
2. Minutes 2 to 5, live runners. The coach tells the runner on third privately whether to go. At 12U, run no throw and the throw to the pitcher; from 14U, add the cut.
3. Minutes 5 to 8, the reads. Where your code has leads, the runner on first sometimes breaks early and the pitcher steps off. Otherwise the runner on third walks off, drifts or goes on the arm swing, and the catcher picks the play. Score 2 for an out with no run, 1 for no run, 0 when the run scores.
4. Minutes 8 to 10, outs and score. Before each rep, call "one out, tie game," "two outs" or "up by six." The catcher names the call before the pitch.

Count runs allowed, not throws.

Quick answers

How do you defend first and third in youth baseball?

Call it before the pitch. With fewer than two outs in a close game, protect the run: throw to the pitcher, cut the throw in front of second, or make no throw. With two outs, throw through to second. The third baseman holds the runner close, and anyone who sees the runner on third break yells "Home!"

Who covers second base on a first-and-third steal?

Whoever your call names. One sound default keeps normal steal coverage: the second baseman against a right-handed hitter, the shortstop against a left-handed hitter. The other middle infielder cuts or backs up. Sam Piraro has the cover step up to cut the throw when the runner on third breaks.

Should the catcher throw to second with runners on first and third?

With two outs, yes, if the throw can get there on target: a tag before the run scores ends the inning. With fewer than two outs in a close game, throw to a cut or to the pitcher, or hold the ball. At 12U, the throw to the pitcher is the safer default.

When should the runner on third go on a first-and-third steal?

When the throw is past the pitcher and headed for second. A runner who goes on the catcher's arm swing can be caught by a throw to the pitcher, a cut or a throw to third.

Is the fake to third, throw to first a balk?

Under the Official Baseball Rules, which Baseball Canada plays, yes, with the pitcher touching the rubber. High school (NFHS) rules, Little League's divisions with balks and Perfect Game youth events allow it. A pitcher who steps back off the rubber first may fake to any base.

Is it interference if the batter stays in the box during the catcher's throw?

Not for standing still. Under the Official Baseball Rules, the batter is out for stepping out of the box or making any other movement that hinders the catcher. If the catcher still throws out the runner, that out stands.

Put the call into a game situation

Play the free sample of Rundown's IQ Game. In the baseball sample, the runner from first is trapped between first and second, stalling so the runner on third can steal home. You choose the play. Every answer comes with the reason.

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