Playoff Chaser
Discover which World Series champions and league pennant winners you've witnessed during their championship seasons.
Every championship team has a story, and you may have witnessed part of it without even realizing it. Playoff Chaser compares your personal baseball history against MLB championship records to reveal which World Series winners, American League champions, and National League champions you've seen play during their winning seasons.
Explore Baseball's Championship History
Browse historical World Series champions and American League and National League pennant winners in one place.
Switch between championship categories to discover which teams reached the top of their leagues and which went on to win the World Series.
- Explore World Series winners throughout MLB history
- Browse American League pennant winners
- Browse National League pennant winners
- View historical team names and logos
- Open team pages to explore more baseball history
Discover the Champions You've Witnessed
You don't have to attend a World Series game to have witnessed a championship team. Playoff Chaser looks at the games you've attended throughout each championship season.
Whether you saw a future champion in April, July, or October, those games become part of your personal championship history.
- See which championship teams you've watched live
- Track how many times you saw each champion during its winning season
- View separate totals for World Series, AL, and NL champions
- Count regular-season and postseason appearances
- Filter championship history by teams you've seen or haven't seen
- Search by team name or championship year
Explore Every Championship Season with Ballpark Pro
Free accounts can explore the latest three seasons with recorded championship achievements. Ballpark Pro unlocks the complete available history of World Series champions and league pennant winners, letting you discover connections to championship teams from decades ago.
- Explore historical World Series championship seasons
- Browse past American League and National League pennant winners
- Discover championship teams you've witnessed across your entire baseball history
- Search and filter historical championship seasons
Ballpark Pro: Unlock full available championship history, historical pennant winners, and deeper exploration of the championship teams you've witnessed.