Baseball · Level 4: Intermediate · Sub-level 4.2
Defensive Plays
10 tests · 100 facts · updated 28 October 2026 · markdown
Defensive plays are the set plays a team calls before the pitch to stop the offence's tactics: bunt defences, pickoffs, rundowns, intentional walks and special alignments. Each depends on every fielder knowing the plan, because if only one player knows, the base is left empty or the throw goes wild.
The wheel play commits the most fielders: both corners crash on a sacrifice bunt and the shortstop rotates to third, aiming to throw out the lead runner. Against a first-and-third steal a fielder can step in front of second, cut the throw and check the runner on third. A good rundown ends with one throw and a tag, since fewer throws mean fewer chances of a wild one. A pitcher's third disengagement that does not get the runner out is a balk. Four fingers to the umpire send a batter to first without pitches, which makes sense with a base open, a dangerous hitter up and a weaker one behind. Against the squeeze a pitchout gives a ball away to guarantee no bunt. The infield fly rule stops a fielder dropping a pop-up on purpose, and a dropped third strike leaves the batter free to run until he is tagged or thrown out. Data-driven shifts grew in the 2010s, four-man outfields followed, and MLB limited the shift in 2023.
The facts below cover the wheel play, first-and-third defences, pickoffs, rundowns, intentional walks, the squeeze, the hidden-ball trick, extreme alignments, infield flies and late-game choices.
Each test below is ten questions on Insporta. The list under a test is what the questions check: one fact per question, with the source it was written from. Read it before the test, or come back from a wrong answer.
Test 1The wheel playTake a test
With both corners crashing, the defence hopes to get the lead runner.
Source: General baseball reference · recall
The shortstop rotates to third as the third baseman charges.
Source: General baseball reference · recall
With the first baseman charging, the second baseman covers first.
Source: General baseball reference · recall
It aims to throw out the lead runner at third on a sacrifice.
Source: General baseball reference · recall
With everyone moving, a swing instead of a bunt can find empty spaces.
Source: General baseball reference · recall
Second is left open; the defence bets on getting the lead runner.
Source: General baseball reference · recall
A crashing third baseman can throw to the shortstop covering third.
Source: General baseball reference · recall
The shortstop's early break starts the wheel.
Source: General baseball reference · applied
The wheel play commits the most fielders.
Source: General baseball reference · applied
Corners crashing and the shortstop rotating to third is the wheel.
Source: General baseball reference · applied
Test 2Defending the first-and-third stealTake a test
The defence accepts the risk to get the out at second.
Source: General baseball reference · recall
A fielder steps in front of second, catches the throw and checks the runner at third.
Source: General baseball reference · recall
The fake can catch the runner on third leaning towards home.
Source: General baseball reference · recall
Late in a close game, keeping the runner on third from scoring is the priority.
Source: General baseball reference · recall
The play is called before the pitch so everyone knows it.
Source: General baseball reference · recall
If the runner on first breaks early, the pitcher can step off and throw to second.
Source: General baseball reference · recall
With two outs, getting the third out at second ends the inning before the run counts.
Source: General baseball reference · recall
The cut catches the runner on third breaking for home.
Source: General baseball reference · applied
Throwing through gives the runner on third the clearest chance.
Source: General baseball reference · applied
Taking the ball short of the bag lets him throw home if the runner breaks.
Source: General baseball reference · applied
Test 3Pickoff playsTake a test
When the pitcher sees daylight between the shortstop and the runner, he can throw to second.
Source: General baseball reference · recall
The pitcher turns and throws on a set count as the fielder breaks to the bag.
Source: General baseball reference · recall
A quick snap throw after the pitch can catch a runner with a big secondary lead.
Source: General baseball reference · recall
If only one knows, the base is empty or the throw goes wild.
Source: General baseball reference · recall
A third disengagement that does not get the runner out is a balk.
Source: General baseball reference · recall
Knowing the pitcher is limited, runners extend their leads.
Source: General baseball reference · recall
The first baseman slips behind the runner and the catcher throws there.
Source: General baseball reference · recall
The pitcher reacts to the gap between runner and fielder.
Source: General baseball reference · applied
The pitcher is closest to first; the catcher's throw to second is longest.
Source: General baseball reference · applied
A fielder sneaking behind the runner sets up a pickoff at second.
Source: General baseball reference · applied
Test 4Rundown techniqueTake a test
If the play goes wrong, he is at least back where he started.
Source: General baseball reference · recall
Fewer throws mean fewer chances of a wild one.
Source: General baseball reference · recall
Running hard makes the runner commit; showing the ball helps the partner.
Source: General baseball reference · recall
Stepping to one side gives a clear throwing lane.
Source: General baseball reference · recall
Moving up shortens the runner's space; calling tells his partner when to throw.
Source: General baseball reference · recall
A fielder who throws runs behind his partner, and others fill in.
Source: General baseball reference · recall
A good rundown ends with one throw and a tag.
Source: General baseball reference · recall
Drive him back, one throw, tag.
Source: General baseball reference · applied
A wild throw gives up a base; an extra throw just adds risk.
Source: General baseball reference · applied
Showing the ball helps the receiving fielder time the throw.
Source: General baseball reference · applied
Test 5The intentional walk as a tacticTake a test
A runner on first creates a force at more bases.
Source: General baseball reference · recall
A signal to the umpire sends the batter to first without pitches.
Source: General baseball reference · recall
With the bases loaded the pitcher has no room for error.
Source: General baseball reference · recall
The pitcher throws nothing hittable but does not signal the walk.
Source: General baseball reference · recall
Avoiding the most dangerous bat can be worth the extra runner.
Source: General baseball reference · recall
Adding a runner can make the extra man the winning run.
Source: General baseball reference · recall
Pitchers feared Bonds so much that he set the record that year.
Source: General baseball reference · recall
Loading the bases creates a force play everywhere.
Source: General baseball reference · applied
Open base, dangerous hitter and a weak one behind make the walk sensible.
Source: General baseball reference · applied
Four fingers to the umpire signal the intentional walk.
Source: General baseball reference · applied
Test 6Defending the squeezeTake a test
A pitch high and tight or a pitchout makes the bunt very hard.
Source: General baseball reference · recall
An early break gives the pitcher a chance to throw a pitch that cannot be bunted.
Source: General baseball reference · recall
The catcher catches it standing and tags the runner coming home.
Source: General baseball reference · recall
If the bunt is close, he can tag the runner himself.
Source: General baseball reference · recall
Closer fielders have a better chance on a bunt.
Source: General baseball reference · recall
If the runner does not break, the sure out at first is the play.
Source: General baseball reference · recall
Pitching out on a guess gives away a ball; guessing wrong gives up the run.
Source: General baseball reference · recall
A pitch out of reach turns the squeeze into an out at home.
Source: General baseball reference · applied
A pitchout gives a ball away to guarantee no bunt.
Source: General baseball reference · applied
A planned pitch wide of the plate for the catcher is a pitchout.
Source: General baseball reference · applied
Test 7The hidden-ball trickTake a test
The coach can see where the ball is.
Source: General baseball reference · recall
The hidden-ball trick is the rarest.
Source: General baseball reference · applied
Test 8Extreme alignmentsTake a test
Against some pull hitters teams used four outfielders.
Source: General baseball reference · recall
Fly-ball pull hitters rarely punish an empty infield spot.
Source: General baseball reference · recall
Infielders must also be on the dirt when the pitch is thrown.
Source: General baseball reference · recall
Moving an infielder to the outfield is not banned, though the infield limits still apply.
Source: General baseball reference · recall
With only three infielders, grounders find holes.
Source: General baseball reference · recall
Shallow outfielders can catch soft liners and throw home.
Source: General baseball reference · recall
An outfielder comes in to the infield.
Source: General baseball reference · recall
Five, four and three infielders.
Source: General baseball reference · applied
Data-driven shifts grew in the 2010s, four-man outfields followed, and MLB limited the shift in 2023.
Source: General baseball reference · applied
Four fielders in the outfield make a four-man outfield.
Source: General baseball reference · applied
Test 9The infield fly and dropped ballsTake a test
That is exactly what the infield fly rule prevents.
Source: General baseball reference · recall
Letting it drop and forcing the slow runner can leave a slower runner on first; teams weigh this rarely.
Source: General baseball reference · recall
With runners on and fewer than two outs, an intentional drop is ruled an out.
Source: General baseball reference · recall
The batter may run, so the catcher must finish the out.
Source: General baseball reference · recall
A dropped third strike with first open gives the batter a chance to reach.
Source: General baseball reference · recall
Catch first, then look for runners straying.
Source: General baseball reference · recall
The batter is out, but the ball is live and runners can be doubled off.
Source: General baseball reference · recall
Recover, then throw to first for the out.
Source: General baseball reference · applied
The infield fly is out by rule; a dropped third strike still needs a tag or throw.
Source: General baseball reference · applied
On a dropped third strike the batter is not out until tagged or thrown out.
Source: General baseball reference · applied
Test 10Defensive decisions late in gamesTake a test
Better gloves protect a small lead.
Source: General baseball reference · recall
Keeping balls down the line in front prevents the tying run reaching second.
Source: General baseball reference · recall
Deep outfielders turn doubles into singles.
Source: General baseball reference · recall
Drawn in, they can throw home on a grounder.
Source: General baseball reference · recall
Any ball in play could score him; a strikeout cannot.
Source: General baseball reference · recall
A grounder can produce two outs.
Source: General baseball reference · recall
It puts the new pitcher's spot further from coming up.
Source: General baseball reference · recall
Pitcher, glove, then alignment.
Source: General baseball reference · applied
With a runner on third and less than two outs, contact can score him.
Source: General baseball reference · applied
Sending in a better fielder late is a defensive replacement.
Source: General baseball reference · applied
Questions people ask
- What is the wheel play in baseball?
- On a sacrifice bunt both corner infielders crash in while the shortstop rotates to cover third and the second baseman covers first. The aim is to throw out the lead runner at third, leaving second open.
- How do you run a rundown correctly?
- Run hard to make the runner commit, show the ball to your partner, and finish with as few throws as possible. A good rundown ends with one throw and a tag.
- How is an intentional walk signalled?
- The defence signals the umpire with four fingers and the batter goes to first without any pitches. It removes the risk of four pitches that might go wild.
- How does a defence stop a squeeze play?
- If the runner breaks early, the pitcher can throw high and tight or pitch out, which makes the bunt very hard and leaves the runner to be tagged at home. If the runner does not break, the sure out at first is the play.
- Is the hidden-ball trick legal?
- Yes, as long as the pitcher does not take a pitching position without the ball, which would be a balk. The fielder keeps the ball and tags the runner when he steps off the base.
- What does the infield fly rule prevent?
- It stops a fielder dropping an infield pop-up on purpose: with runners on and fewer than two outs, the intentional drop is ruled an out. The batter is out, but the ball is live and runners can be doubled off.
- When can a batter run on a dropped third strike?
- With first base open, a dropped third strike gives the batter a chance to reach, so he is not out until tagged or thrown out. The catcher recovers the ball and throws to first.
Sources
General baseball references, WBSC and league material, coaching manuals; original questions authored, nothing reproduced. Numbered rules belong to the Rules category.
- General baseball reference100