20-0 — St. Louis Maroons, 1884
13-0 — Tampa Bay Rays, 2023
13-0 — Milwaukee Brewers, 1987
13-0 — Atlanta Braves, 1982-x
11-0 — Oakland A’s, 1981-x
10-0 — Cleveland Indians, 1966
10-0 — Pittsburgh Pirates, 1962
10-0 — Brooklyn Dodgers, 1955-z
9-0 — Kansas City Royals, 2003
9-0 — Cincinnati Reds, 1990-z
9-0 — Detroit Tigers, 1984-z
9-0 — St. Louis Browns, 1944-y
9-0 — Brooklyn Dodgers, 1940
9-0 — New York Giants, 1918
x-won division
y-won pennant
z-won World Series
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