Postseason pinch-running put Boston’s season on Dave Roberts’ legs, with Mariano Rivera holding the ball and elimination three outs away. Kevin Millar had walked to open the ninth inning of Game 4 of the 2004 ALCS. Now Roberts stood at first, preparing to challenge a battery that knew why he had entered.
The Red Sox trailed 4–3. The National Baseball Hall of Fame’s account of Roberts’ steal describes Jorge Posada firing toward second as Derek Jeter swept his glove toward Roberts’ arm. His left hand found the bag first. Bill Mueller followed with a single that brought him home.
Boston still needed to finish the comeback. Roberts had given the next hitter a way to tie the game with one clean swing. That distinction separates useful speed from a manager simply emptying his bench. A faster runner cannot rescue every inning, and the hitter he replaces cannot come back. Which ball can the substitute score on that the original runner cannot? How much offense does the manager give away to make that run possible?
Gore Gave the Royals Another Route
Billy Butler supplied the bat. Terrance Gore supplied the legs. During Kansas City’s 2014 Wild Card Game comeback against Oakland, Gore replaced Butler after an eighth-inning RBI single and immediately stole second. MLB’s game report follows that exchange of power for speed.
The move gave the inning a different shape. Butler had done his work in the batter’s box; Gore could threaten the next base without another hit. Ned Yost traded skills that had already helped Kansas City for skills that could help it next.
That distinction matters more than the label attached to the substitute. Swapping one capable runner for a marginally faster teammate buys less than replacing a heavy-footed hitter with a specialist. In Game 2 of the 2014 ALCS, Gore scored the go-ahead run after Mike Moustakas bunted him to second and Alcides Escobar doubled.
“I think it was the right decision,” Gore told MLB afterward. He accepted a bunt instead of a steal. Even the fastest player on the bench can help an inning by following a plan that asks him to wait.
The run required several players to do their jobs. Gore’s presence alone does not prove that Omar Infante, the hitter he replaced, would have failed to score on the double. A manager needs to identify where the substitute improves the play, rather than crediting his speed for everything that follows.
Ninety Feet Can Cost the Whole Inning
During the following postseason, Gore supplied the uncomfortable companion to those highlights. In Game 4 of the 2015 ALDS, a replay reversal erased him at third and ended Kansas City’s seventh inning. The potential tying run vanished with him.
Third base offers a seductive view of home. With fewer than two outs, a runner there can score on a sacrifice fly or certain groundouts. Those routes disappear when the inning already has two outs.
A fast runner at second can score on many singles without risking another steal. Hit location, outfield positioning and the throwing arm still govern the trip. Reaching third improves some chances, but an out wipes them all away. The substitute’s arrival should not automatically trigger another green light. Sending speed onto the field gives the manager another choice. Sometimes the correct instruction amounts to staying close enough to the bag to keep the inning alive.
Not every failed steal reflects a bad decision. A catcher can make an exceptional throw, or a runner can execute poorly after choosing a sensible opportunity. The manager must judge the gamble before the tag, with the batter and scoreboard in view.
The Bat Leaves With the Runner
A single pencil stroke on an October lineup card carries a permanent cost. Under MLB’s Official Baseball Rules, once a manager removes a hitter, that player cannot return. His replacement inherits the batting-order position, although the manager can substitute again later. That means a tying run in the eighth might cost a dangerous bat in the eleventh. Imagine the pinch-runner pulling on batting gloves while a closer warms up at 100 mph. Another pinch-hitter could spare him that assignment, but the manager would spend another reserve.
The roster decision starts even earlier. Before the 2015 ALDS, the Associated Press reported that Kansas City chose Gore over Jonny Gomes. Yost kept a running specialist and surrendered a hitter who offered help against left-handed pitching.
The choice spends both a place on the roster and a place in the game. A reserve who can also defend well reduces the price. Replacing a catcher makes the next defensive inning harder to arrange, especially when the backup already has another assignment. The manager needs that answer before pointing down the bench. Discovering the problem after the runner scores still leaves a problem.
The Throw Matters as Much as the Legs
Imagine Ian Happ charging a single in left while the runner rounds second. Does he gather the ball cleanly while moving toward home, or chase it toward the corner? The same runner faces two different races. A clean pickup gives the outfielder a direct throw. Chasing a ball away from the plate gives the runner more time to turn and accelerate.
Baseball Savant’s extra-base running model accounts for the runner’s position, the outfielder’s arm and the fielder’s distance from the ball and bases. Its approach matches the questions a third-base coach must answer while the play unfolds.
A faster substitute helps most when his legs can exploit that opening. Top speed matters less if he hesitates on contact or takes a wide turn around third. The read and the route must survive the pressure, too. A clean advance may never draw a throw. That quiet outcome can hide the substitute’s contribution: the catcher never gets a chance to make the tag.
The 69 Percent Figure Has Limits
The catcher’s glove pops, and the runner slides into second. A season-long run-value model assigns a number to that advance. The scoreboard determines what it means tonight. Baseball Savant’s published basestealing framework values a successful steal at 0.20 runs and a caught stealing or pickoff at minus 0.45. Under those fixed weights, a runner needs roughly 69 percent success just to break even.
That figure provides a general run-expectancy baseline. It does not come from a matrix tailored to the exact inning, score and number of outs. Treating it as an October permission slip confuses an average run value with the chance of winning this game. A manager protecting a tying runner already at second with two outs may demand far better odds before risking third. Losing him ends the inning, while reaching third may add little to the chance of scoring on a single.
A running specialist can help in that spot without attempting another steal. His speed might already make the next single enough to bring him home. Desperation can also push a manager toward greater risk. When a team trails late and struggles to create contact, waiting at first carries its own cost. October does not make every gamble foolish; the score determines which gamble serves the offense.
Before the Helmet Leaves the Rack
The next decision will arrive without time for a seminar. A hitter will reach first, the dugout will stir, and a reserve will glance toward the manager. By then, the staff should know which defensive arms to challenge, which pitchers offer an opening and who takes the field afterward.
The move begins with a specific scoring route. Can the reserve reach home on a single that would strand the starter at third? Will his jump give the team a credible chance to steal second? Does removing the hitter create a batting-order problem the remaining bench can solve? Those questions belong together. A runner can improve the current inning while weakening the next one, and a manager must decide which opportunity matters more. The answer changes with the score and the outs, rather than with the crowd’s appetite for action.
Roberts’ steal endures because the sequence delivered exactly what Boston needed. His spikes now sit in the Hall of Fame’s collection. Mueller’s single supplied the hit, and Roberts’ advance put the tying run within its reach.
That remains the test. The substitute does not need to steal the next base or force a desperate throw. He needs to turn a reachable opportunity into a better chance of scoring. When the manager reaches for speed, which play does he expect it to change?
READ MORE: The October Strike Zone: Tracking Called Pitches Across the Division Series
FAQs
What does a pinch-runner do in baseball?
A pinch-runner replaces a player already on base. Managers often make the move to improve their chances of advancing or scoring.
Can a hitter return after a pinch-runner replaces him?
No. Once the manager removes the hitter, he cannot return. The replacement takes his batting-order position unless the manager makes another substitution.
Does a pinch-runner have to steal a base?
No. He can help by scoring on a single, advancing on a loose pitch or taking an extra base when the defense allows it.
Why can stealing third with two outs be risky?
A failed attempt ends the inning. A fast runner may already score from second on a single, so reaching third can offer little extra benefit.
Is 69 percent always the break-even rate for a steal?
No. That figure comes from fixed Statcast run-value weights. The inning, score and outs change whether a steal improves the team’s chance of winning.
