Most homers in one road park in one season for one batter, Part 2.

See data in a free google spreadsheet that  I created.  See June 1, 2011 posts.   I cleaned up the data and added detail.

Most of the occurrences were before expansion started (1961 AL, 1962 NL), decreasing the number of games between teams from 22 (11 home, 11 road).

Harry Heilmann of the Detroit Tigers hit TEN home runs in Shibe Park Philadelphia in 1922 against the As; one bounced into the stands and would not be considered a home run after 1931.

Five batters hit nine in one road park in one season:

Lou Gehrig 1931

Jimmie Foxx 1932

Stan Spence (2 home, 12 season) 1943

Joe Adcock (6 home) (four in one game) 1954

Willie Mays 1955

There were 24 seasons in which a player hit at least 8 home runs in a road park.

three each:
Ruth:  Fenway Park,  Shibe Park,  Sportsman's Park III
Gehrig: League Park IV,   Shibe Park,  Sportsman's Park III

two each:
Foxx:   Tiger Stadium, Sportsman's Park III
DiMaggio:   Sportsman's Park III twice
Mays: Ebbets Field, County Stadium

Parks multiple times:
  Sportsman's Park III St. Louis 7 (6 Browns, 1 Cardinals)
  Shibe Park Philadelphia As 4
  Baker Bowl Philadelphia Phillies 2
  Ebbets Field Brooklyn Dodgers 2

Teams  multiple times against:
Browns 6
As 4
Phillies 2
Dodgers 2

Teams doing it multiple times:
Yankees 9
Giants 4
Cardinals 2
Orioles 2

four in one game:
Gehrig 1932   Shibe Park
Adcock 1954   Ebbets Field
Mays 1961   County Stadium

Mike Schmidt hit four in one game in Wrigley Field Chicago in 1976 but his 8 homers there occured in 1980.

Most HR season:

Sosa 64

Ruth 60

Foxx 58

Mays 51

Fewest HR season:

Stan Spence 12 (2 home)

Babe Dahlgren 15 (2 home)

Bill Terry 20 (10 home)

Harry Heilmann 21  (8 home, 10 in Shibe Park)

Most AB:

Terry 58

DiMaggio 53

DiMaggio 50

Fewest AB:
Powell 31
Mays 37 (1961)
Gentile 37
Schmidt 38
Adcock 39

Best AB/HR:
Powell 3.875
Adcock 4.33
Spence 4.44
Mays 4.625 (1961)
Gentile 4.625

Worst AB/HR:
Bill Terry 7.25
Joe DiMaggio 6.625
Joe DiMaggio 6.25

Most games:
Bill Terry 15 note: 1927 Giants played 74 games at home, 80 on road
Joe DiMaggio 12 (1937)
Babe Ruth 12 (1927)
Harry Heilmann 12

Fewest games:
Mike Schmidt 9
Boog Powell 9
Sammy Sosa 10
Jim Gentile 10
Stan Spence 10

Oddities:
Joe DiMaggio 1936 288 AB, 8 HR Yankee Stadium;  50 AB, 8 HR  Sportsman's Park III St. Louis

Babe Dahlgren 1939 242 AB, 2 HR Yankee Stadium;  48 AB, 8 HR  Shibe Park Philadelphia (one IPHR)