Baseball Rules · MLB Playoffs · Pennant Race
What Is a Pennant in Baseball? — Everything You Need to Know
Winning the pennant means winning your league championship and advancing to the World Series. Here's what it means, how it works, and why it matters.Quick Answer
Winning the pennant means winning your league championship — the AL or NL — and advancing to the World Series.
MLB has two leagues — the American League and the National League. The team that wins the AL Championship Series (ALCS) wins the AL pennant. The team that wins the NLCS wins the NL pennant. Those two pennant winners then meet in the World Series. Winning the pennant is a prerequisite to winning the World Series.
What Does It Mean to Win the Pennant?
The pennant is the league championship — not the World Series. This distinction trips people up more than you'd think. Winning the pennant means your team has won everything within their league and earned the right to represent the AL or NL in the World Series. A team can win the pennant and still lose the World Series — and two pennant winners are crowned every season, but only one World Series champion.
The term "pennant" comes from nautical tradition — ships flew pennant flags from their masts to signal their nationality and affiliation. Baseball adopted the term in the 19th century, with the actual pennant flag being the physical banner flown at the ballpark to represent the league championship. Today the term refers to the league championship itself, not necessarily a physical flag — though teams still receive the trophy and the honor that comes with it.
The pennant trophies — one detail most articles miss
When a team wins the AL pennant, they receive the William Harridge Trophy, named after the longtime American League president. The NL pennant winner receives the Warren C. Giles Trophy, named after the former National League president. These trophies are awarded after the ALCS and NLCS respectively, before the World Series begins. The Commissioner's Trophy — the one fans recognize from the championship parade — is awarded to the World Series winner.
What Is the Pennant Race?
Pennant Race Definition
The pennant race is the final stretch of the regular season when teams compete for playoff position.
As the 162-game regular season approaches its end — typically August and September — teams are fighting for division titles, wild card spots, and favorable playoff seeding. Every game takes on added weight. Teams chasing the playoffs and teams trying to hold leads create some of the most compelling baseball of the year.
The pennant race is when baseball produces its best drama. Teams that are out of contention become spoilers, beating division leaders and scrambling the standings in the final weeks. Teams with comfortable leads try to rest their best players while those chasing them have to play desperate baseball every night.
The magic number is the number most fans track during the pennant race — it's the combination of wins your team needs plus losses your closest competitor needs to clinch a division title or playoff spot. When the magic number reaches zero, the race is over.
How Teams Win the Pennant — The Playoff Path
Since the expanded 12-team playoff format was introduced in 2022, winning the pennant requires navigating three rounds of postseason play.
1
Wild Card Series (Best of 3)
Seeds 3–6 in each league play a best-of-3 series. Seeds 1 and 2 receive a bye directly to the Division Series. The 3 seed hosts the 6 seed; the 4 seed hosts the 5 seed. One bad game can end your season — there's no margin for error.
2
Division Series (Best of 5)
The two Wild Card Series winners join the 1 and 2 seeds for four best-of-5 series in each league. Win three games and advance. This is where the best teams typically assert themselves — home field advantage is meaningful in a short series.
3
League Championship Series (Best of 7) — The Pennant
The final two teams in each league play a best-of-7 series. The winner is crowned the AL or NL champion — they win the pennant and advance to the World Series. This is the moment teams celebrate on the field before the World Series even begins.
4
World Series (Best of 7) — The Championship
The two pennant winners — one from the AL, one from the NL — meet in a best-of-7 series for the Commissioner's Trophy. The pennant is a prerequisite. The World Series title is the goal.
The current 12-team playoff format introduced in 2022 — still in use today.
Pennant vs. World Series — What's the Difference?
| Pennant | World Series | |
|---|---|---|
| What it means | Winning your league (AL or NL) | Winning the entire championship of MLB |
| How many awarded | Two per season (one AL, one NL) | One per season |
| What you win | William Harridge or Warren C. Giles Trophy | Commissioner's Trophy |
| Series format | Best of 7 (ALCS / NLCS) | Best of 7 |
| What comes next | Face the other pennant winner in the World Series | Nothing — you're the champion |
| Historical significance | Before 1969, winning the pennant meant winning the AL or NL outright — there was no LCS | Has always been the ultimate prize |
MLB Playoff Seeding — How It Works
| Seed | How Earned | First Round |
|---|---|---|
| #1 Seed | Best record among division winners in their league | Bye — straight to Division Series |
| #2 Seed | Second best record among division winners | Bye — straight to Division Series |
| #3 Seed | Third division winner (worst record of the three) | Wild Card Series vs. #6 seed |
| #4 Seed | Best wild card record (non-division winner) | Wild Card Series vs. #5 seed |
| #5 Seed | Second best wild card record | Wild Card Series vs. #4 seed |
| #6 Seed | Third best wild card record | Wild Card Series vs. #3 seed |
Can a last-place team get back into the pennant race?
Mathematically yes — any team within 10 games of a wild card spot with enough games remaining is technically alive. Practically, teams more than 7–8 games back in August face extremely long odds. The pennant race historically produces miraculous comebacks — the 2011 Boston Red Sox collapsed from 9 games up in September. The 2007 Colorado Rockies won 21 of 22 games to clinch a wild card. Baseball's long season creates the conditions for dramatic late surges in both directions.
Most Pennants in MLB History
The pennant count is one of the most debated statistics in baseball history because it reflects a franchise's sustained excellence over decades. Here are the all-time leaders.
| Team | League | Pennants Won | Notes |
|---|---|---|---|
| New York Yankees | AL | 40+ | The most pennants in baseball history by a wide margin — the Yankees have been to the World Series more than any franchise in any professional sport |
| Los Angeles Dodgers | NL | 25+ | Including their Brooklyn years — one of the most storied NL franchises in history |
| San Francisco Giants | NL | 23+ | Including New York Giants era |
| St. Louis Cardinals | NL | 19+ | The most successful NL franchise of the modern era |
| Oakland / Sacramento Athletics | AL | 15+ | Including their Philadelphia and Kansas City years — three consecutive championships in the early 1970s |
| Boston Red Sox | AL | 14+ | Including the dynasty of the early 1900s and the modern championship era |
How many pennants have the Yankees won?
The New York Yankees have won more than 40 American League pennants — the exact number depends on how pre-AL history is counted, but the Yankees have been to the World Series over 40 times, winning 27 of them. No franchise in any American professional sport comes close to that level of sustained pennant-winning success. Their dynasty periods — the 1920s–30s Murderers' Row era, the 1940s–50s DiMaggio/Mantle era, and the 1996–2000 dynasty — each produced multiple consecutive pennants.
Memorable Pennant Races in Baseball History
1967
The Impossible Dream — Four Teams Alive on the Final Weekend
The 1967 American League pennant race is widely considered the most dramatic in baseball history. The Red Sox, Tigers, Twins, and White Sox were all mathematically alive entering the final weekend of the season. The Red Sox needed to win both games of their final series while the Tigers needed to lose. Boston won. The Tigers split. The Red Sox — who had finished ninth the previous year — won the pennant in what Boston fans still call "The Impossible Dream" season.
1978
The Boston Collapse and Bucky Dent
The Red Sox held a 14-game lead over the Yankees in July. By September they had blown it entirely. The two teams finished the season tied, requiring a one-game tiebreaker at Fenway Park. Yankees shortstop Bucky Dent hit a three-run home run over the Green Monster — a player with five home runs on the season — and the Yankees won the division. The name "Bucky Effin' Dent" still gets a reaction in Boston.
2004
Down 3-0 to the Yankees — The Greatest Comeback
The Boston Red Sox fell behind 3-0 in the ALCS to the Yankees — no team in baseball history had ever come back from 3-0 to win a series. The Red Sox won four straight to win the pennant, then swept the Cardinals in the World Series to end an 86-year championship drought. It remains the only 3-0 comeback in baseball postseason history. I was on Lansdowne Street that night. There are no words for what that pennant meant to Boston.
1951
"The Giants Win the Pennant!" — Bobby Thomson's Shot Heard 'Round the World
The Brooklyn Dodgers led the Giants by 13.5 games in August. The Giants won 37 of their final 44 games to force a three-game tiebreaker. In the deciding game, with the Dodgers leading 4-1 in the ninth, Bobby Thomson hit a three-run home run off Ralph Branca. Radio broadcaster Russ Hodges' call — "The Giants win the pennant! The Giants win the pennant!" — is one of the most famous calls in sports history.
The Pennant's Historical Evolution
Baseball pennants have looked very different at different points in the sport's history. Understanding this makes the modern pennant race more meaningful.
| Era | How the Pennant Was Won |
|---|---|
| 1869–1902 | Best record in the league won the pennant outright — no playoffs. The Cincinnati Red Stockings won the first pennant in 1869. |
| 1903–1968 | AL and NL pennant winners met directly in the World Series. Winning your league race meant going to the Series. |
| 1969–1993 | Division play introduced. AL and NL Championship Series (LCS) added — pennant awarded to LCS winner. |
| 1994–2011 | Wild card introduced — more teams eligible for postseason, but pennant still won through LCS. |
| 2012–2021 | Second wild card added — 10-team playoff format with one-game wild card playoff. |
| 2022–present | Expanded to 12 teams — Wild Card Series (best of 3) replaces the one-game playoff. Format currently in use. |
MLB Division Structure — Current Teams
| Division | Teams |
|---|---|
| AL East | Baltimore Orioles, Boston Red Sox, New York Yankees, Tampa Bay Rays, Toronto Blue Jays |
| AL Central | Chicago White Sox, Cleveland Guardians, Detroit Tigers, Kansas City Royals, Minnesota Twins |
| AL West | Houston Astros, Los Angeles Angels, Sacramento Athletics, Seattle Mariners, Texas Rangers |
| NL East | Atlanta Braves, Miami Marlins, New York Mets, Philadelphia Phillies, Washington Nationals |
| NL Central | Chicago Cubs, Cincinnati Reds, Milwaukee Brewers, Pittsburgh Pirates, St. Louis Cardinals |
| NL West | Arizona Diamondbacks, Colorado Rockies, Los Angeles Dodgers, San Diego Padres, San Francisco Giants |
Frequently Asked Questions
What is a pennant in baseball?
A pennant in baseball is the league championship — awarded to the team that wins the American League Championship Series (ALCS) or National League Championship Series (NLCS). Winning the pennant means your team has won everything within their league and advances to the World Series. Two pennants are awarded each season, one per league.
What does winning the pennant mean in baseball?
Winning the pennant means your team has won their league championship and earned the right to represent the AL or NL in the World Series. It's a significant achievement on its own — separate from winning the World Series. Teams celebrate on the field when they win the pennant even before the World Series begins.
What is the pennant race in baseball?
The pennant race is the late-season competition among teams fighting for playoff position — division titles and wild card spots. It typically heats up in August and September as teams converge in the standings. Every game takes on extra significance because the difference between making and missing the playoffs can come down to a single game at the end of the season.
What is the difference between the pennant and the World Series?
The pennant is the league championship — there are two pennant winners per season, one from the AL and one from the NL. The World Series is the championship between those two pennant winners — only one World Series champion is crowned. You must win the pennant to reach the World Series, but winning the pennant and winning the World Series are two separate accomplishments.
What is the pennant trophy called?
The AL pennant winner receives the William Harridge Trophy, named after the longtime AL president. The NL pennant winner receives the Warren C. Giles Trophy, named after the former NL president. The World Series winner receives the Commissioner's Trophy — the one most fans recognize from championship celebrations.
How many pennants have the Yankees won?
The New York Yankees have won more than 40 American League pennants — the most of any franchise in baseball history. They have been to the World Series over 40 times and have won 27 World Series championships. No professional sports franchise in America has won more league championships.
Why is it called a pennant in baseball?
The term comes from the nautical tradition of flying triangular pennant flags from ship masts to signal a vessel's nationality or affiliation. Baseball adopted the term in the 19th century when winning teams flew actual pennant flags at their ballparks. The word "pennant" evolved from the French "pennon" meaning a small flag or banner.
How does the current MLB playoff format work?
The current 12-team format (introduced 2022) has six teams per league. The 1 and 2 seeds receive byes to the Division Series. Seeds 3–6 play a best-of-3 Wild Card Series. Division Series winners advance to the best-of-7 League Championship Series, where the pennant is awarded. Both pennant winners then play in the best-of-7 World Series.
The bottom line
Winning the pennant is the penultimate achievement in baseball — the league championship that earns you a spot in the World Series. Two teams win it every season. Only one wins the championship. The pennant race is the drama of September baseball — teams fighting for position, magic numbers counting down, spoilers upending the standings in the final weeks.
It's a flag, a trophy, a tradition from the 19th century, and the reason playoff baseball in October is the best sports viewing of the year.