1987 MLB Imperialism Map

Territory Changes

Team Territory Control

This table shows all teams sorted by the number of territories they control.

Final standings: the Boston Red Sox finished on top with 14 of 26 territories (53.8%).

Team Territories Controlled
Boston Red Sox 14 (53.8%)
Cincinnati Reds 12 (46.2%)

Play with the MLB Map

Simulate your own territory battles: spin the wheel, input results, and see what happens.

Imperialism Map is proudly sponsored by another of my projects:

Territory Creator


Sales territory management software

Because not all territorial conquests happen on the field.

Territory Mapping Software

How MLB Territory Conquest Works

  • Every team starts with the land closest to its ballpark.
  • Win a game and you take all of the loser's territory.
  • Territory carries over all season, with no resets until next year.
  • Click any territory to trace every team that held it.

Full Rules and FAQ

Data sources: Game data from Sports Reference; venue data from VenueStats .

📖 I also built MakeCookbook Turn family recipes into a beautiful printed book
Make your own cookbook

Season Records

The standout territory feats of the season.

Biggest Land Grab
+14
in a single day (1987-08-27)
Longest Reign
17
straight days as leader
Most Conquered
181
territories taken all season
Biggest Collapse
−14
lost in one day (1987-08-29)

Team Directory

Each team's season at a glance — days spent leading the map, largest empire, territory conquered, and the rise-and-fall sparkline. Sorted by who dominated.

Exhibition Stadium

36 days led peak 14 +169 taken

Milwaukee County Stadium

23 days led peak 14 +139 taken

Fenway Park

21 days led peak 14 +108 taken

Navin Field

14 days led peak 14 +88 taken

Angel Stadium

14 days led peak 14 +125 taken

Memorial Stadium

10 days led peak 14 +39 taken

White Sox Park

6 days led peak 14 +71 taken

Yankee Stadium I

6 days led peak 14 +81 taken

Cinergy Field

6 days led peak 12 +177 taken

Busch Stadium

6 days led peak 12 +67 taken

Kauffman Stadium

5 days led peak 10 +16 taken

Kingdome

5 days led peak 10 +42 taken

Oakland Coliseum

4 days led peak 14 +56 taken

NRG Astrodome

4 days led peak 12 +77 taken

Cleveland Stadium

3 days led peak 14 +44 taken

Turnpike Stadium

3 days led peak 10 +20 taken

Dodger Stadium

0 days led peak 12 +132 taken

Shea Stadium

0 days led peak 12 +71 taken

Qualcomm Stadium

0 days led peak 12 +78 taken

Wrigley Field

0 days led peak 8 +60 taken

Three Rivers Stadium

0 days led peak 8 +16 taken

Veterans Stadium

0 days led peak 4 +18 taken

Olympic Stadium

0 days led peak 4 +14 taken

Explore MLB Through the Years

All 156 MLB seasons, 1871 to 2026. Replay any of them game by game, or make your own version.

Questions or Feedback?

Got ideas for making these maps better? Found something weird? Want to suggest a new feature?