Will 2026 Bring the Impossible Cubs-White Sox World Series?
Chicago Baseball’s Rare Double Play: When Both the Cubs and White Sox Contend
Published: August 17, 2026
Author: Bradford Doolittle (MLB writer and analyst for ESPN.com since 2013)
What’s Happening Right Now?
Imagine you’re a kid in Chicago who loves baseball. You have two teams to cheer for:
- The North Side Cubs (play at historic Wrigley Field)
- The South Side White Sox (play at Rate Field)
Right now, in August 2026, BOTH teams are actually good at the same time!
When they meet for a three-game series at Wrigley Field starting Monday, they’re both "contenders" — meaning they have a real shot at making the playoffs and maybe even winning the World Series.
But here’s the crazy part: This almost NEVER happens.
How Rare Is This? The Numbers Don’t Lie
The author looked at every single season since 1901 (that’s 126 seasons!) and checked where both teams stood on August 17th — the same date as today’s game.
Here’s what he found:
| Situation | How Many Seasons | Percentage |
|---|---|---|
| Both teams contending | Only 11 seasons | 9% |
| Only White Sox contending | 29 seasons | 23% |
| Only Cubs contending | 32 seasons | 25% |
| Neither team contending | 54 seasons | 43% |
IMPORTANT POINT: In 43% of all seasons, Chicago baseball fans had zero reasons to watch September baseball. They were probably waiting for football season (Go Bears! ).
Back-to-Back Double Contention? Even Rarer!
There have only been three times in history where both teams contended two years in a row:
- 1906–1907 (right after the first Windy City World Series)
- 2003–2004
- 2008–2009
And get this: Both teams have only made the playoffs in the same year THREE TIMES ever:
- 1906
- 2008
- 2020 (shortened COVID season)
The Top 10 Seasons with the Best Odds for a "Windy City World Series"
The author ran daily computer simulations to calculate the odds of a Cubs vs. White Sox World Series. Here are the 10 best seasons — and what actually happened:
1. 1907: 2.8-to-1 odds (Best odds ever!)
- Cubs: 78-29 (dominating the NL, 99.9% pennant chance)
- White Sox: 64-45 (1 game back in AL, 36.1% pennant chance)
- What happened: Cubs won the World Series vs. Detroit. White Sox collapsed in September.
2. 1906: 3.3-to-1 odds (The ONLY time it actually happened!)
- Cubs: 77-30 (set record with 116 wins!)
- White Sox: 63-43 (won AL with a 2.13 ERA)
- What happened: White Sox upset the Cubs in 6 games!
3. 2008: 19.2-to-1 odds
- Cubs: 75-48 (led NL Central all year)
- White Sox: 69-54 (½ game back in AL Central)
- What happened: Both lost in the first round! Combined 1-6 in playoffs.
4. 1945: 41.3-to-1 odds
- Cubs: 70-39 (won NL pennant — their last until 2016!)
- White Sox: 57-50 (faded to sub-.500 finish)
- Note: This was during WWII — rosters were depleted.
5. 2026 (THIS YEAR!): 63-to-1 odds
- White Sox: 65-58 (lead AL Central by 5½ games, 13.7% pennant chance)
- Cubs: 72-53 (5 games back in NL Central, 12.7% pennant chance)
- Recent drama: White Sox beat Cubs in May on a walk-off HR by Edgar Quero. White Sox then swept Detroit; Cubs lost 2 of 3 to St. Louis.
6. 1984: 156.7-to-1 odds
- Cubs: 70-50 (Ryne Sandberg MVP year, Harry Caray mania!)
- White Sox: 58-61 (collapsed after All-Star break: 17-32)
7–10. The Rest (Really Long Odds)
| Season | Odds |
|---|---|
| 1915 | 222.8-to-1 |
| 2004 | 275.7-to-1 |
| 1977 | 416.7-to-1 |
| 1996 | 552.5-to-1 |
The 1977 Story: "So Close, Yet So Far"
IMPORTANT POINT: 1977 perfectly captures the Chicago baseball experience.
North Side: Cubs started 47-22! Had a 77% playoff chance and 33% pennant chance. Finished 81-81.
South Side: "South Side Hitmen" led AL West by 5½ games in mid-August. Finished 12 games back.
At the All-Star break: BOTH in first place. A month later? Dreams crushed.
Sound familiar? The author says: "That has been the story for most of the few seasons in which the Cubs and White Sox have been good at the same time."
How Does Chicago Compare to Other Cities?
Since 1901, only FOUR cities have ever hosted a crosstown World Series:
| City | Times | Last Time |
|---|---|---|
| New York | 14 | 2000 (Yankees vs. Mets) |
| Bay Area | 1 | 1989 (A’s vs. Giants) |
| St. Louis | 1 | 1944 (Cardinals vs. Browns) |
| Chicago | 1 | 1906 (White Sox vs. Cubs) |
Never happened: Boston, Los Angeles, Philadelphia
Fun Fact: Boston almost had one in 1948 — Red Sox lost a tiebreaker to Cleveland at Fenway. If they’d won, they’d have played the Boston Braves!
Summary: What This All Means for 2026
- This is special. Both teams contending in mid-August? Only happened 11 times in 126 years.
- The odds are long (63-to-1), but that’s the 5th-best ever — better than 1984, 1977, 2004, etc.
- History says don’t get your hopes up. Usually one (or both) teams fade in September.
- But that’s why you enjoy it NOW. As the author says: "Chicago fans, you better enjoy it while you can."
FAQ: Your Burning Questions Answered
Q: What does "games behind" mean?
A: It’s how many games a team trails the division leader. If the Cubs are "5 games behind Milwaukee," they need to win 5 more games than Milwaukee (or Milwaukee loses 5 more) to tie for first.
Q: What’s a "pennant"?
A: Winning your league (American League or National League). Before 1969, winning the pennant meant you went straight to the World Series. Now you have to win playoff rounds first.
Q: What are "simulations" and "pennant probability"?
A: The author runs a computer model thousands of times per day, simulating the rest of the season. "13.7% pennant probability" means in 13.7% of those simulations, the White Sox won the AL.
Q: Why were the 1906 Cubs so famous if they lost?
A: They won 116 games — a record that stood for 95 years (tied by 2001 Seattle). But the "Hitless Wonders" White Sox beat them in the World Series. Sometimes the best team doesn’t win!
Q: Could 2026 actually be the second Windy City World Series?
A: It’s possible (63-to-1 odds = ~1.6% chance), but history says probably not. Still — that’s 5x better odds than most years! So grab a hot dog, enjoy the rivalry series, and dream a little.
"All we know, Chicago fans, is you better enjoy it while you can."
— Bradford Doolittle