Chicago's four-game sweep over Houston to win the 2005 World Series heads the list of the closest Fall Classic four-game sweeps in history, in terms of run differential.

Closest World Series Four-Game Sweeps
Year
Winner
Loser
Differential
2005
Chicago (AL)
Houston (NL)
6 runs
1950
New York (AL)
Philadelphia (NL)
6 runs
1922
New York (NL)
New York (AL)
6 runs
1963
Los Angeles (NL)
New York (AL)
8 runs
1914
Boston (NL)
Philadelphia (AL)
10 runs
1966
Baltimore (AL)
Los Angeles (NL)
11 runs
1939
New York (AL)
Cincinnati (NL)
12 runs
1954
New York (NL)
Cleveland (AL)
12 runs
1999
New York (AL)
Atlanta (NL)
12 runs
2004
Boston (AL)
St. Louis (NL)
12 runs
1998
New York (AL)
San Diego (NL)
13 runs
1927
New York (AL)
Pittsburgh (NL)
13 runs
1907
Chicago (NL)
Detroit (AL)
13 runs*
1938
New York (AL)
Chicago (NL)
13 runs
1976
Cincinnati (NL)
New York (AL)
14 runs
1928
New York (AL)
St. Louis (NL)
17 runs
1932
New York (AL)
Chicago (NL)
18 runs
1989
Oakland (AL)
San Francisco (NL)
18 runs
* Series went five games, because of a Game 1 tie