1991 MLB Imperialism Map

Territory Changes

Team Territory Control

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

Final standings: the Detroit Tigers finished on top with 14 of 26 territories (53.8%).

Team Territories Controlled
Detroit Tigers 14 (53.8%)
Houston Astros 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 .

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Season Records

The standout territory feats of the season.

Biggest Land Grab
+14
in a single day (1991-10-05)
Longest Reign
17
straight days as leader
Most Conquered
149
territories taken all season
Biggest Collapse
−14
lost in one day (1991-10-06)

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.

Navin Field

23 days led peak 14 +123 taken

Three Rivers Stadium

20 days led peak 12 +70 taken

Dodger Stadium

19 days led peak 12 +103 taken

NRG Astrodome

17 days led peak 12 +80 taken

Fenway Park

14 days led peak 14 +97 taken

Qualcomm Stadium

13 days led peak 12 +149 taken

Milwaukee County Stadium

11 days led peak 14 +141 taken

Busch Stadium

11 days led peak 12 +91 taken

Yankee Stadium I

5 days led peak 14 +92 taken

Wrigley Field

5 days led peak 12 +30 taken

Hubert H. Humphrey Metrodome

5 days led peak 10 +106 taken

Veterans Stadium

5 days led peak 10 +42 taken

Olympic Stadium

5 days led peak 10 +21 taken

Cinergy Field

2 days led peak 12 +43 taken

Memorial Stadium

1 day led peak 14 +66 taken

Angel Stadium

1 day led peak 14 +55 taken

Rogers Centre

1 day led peak 10 +48 taken

Guaranteed Rate Field

0 days led peak 10 +73 taken

Cleveland Stadium

0 days led peak 10 +44 taken

Kauffman Stadium

0 days led peak 10 +53 taken

Kingdome

0 days led peak 10 +26 taken

Turnpike Stadium

0 days led peak 8 +12 taken

Shea Stadium

0 days led peak 4 +13 taken

Oakland Coliseum

0 days led peak 4 +53 taken

Explore MLB Through the Years

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