Mickey Mantle batting only righty: .413 OBP.

Mickey Mantle might have reduced his On Base Percentage (OBP) from .421 to .413 had he batted only right handed instead of switch hitting.

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Mickey in the Twilight Zone (TZ) of batting only righty against righty pitchers would have suffered much more at home in Yankee Stadium.  On the road it increased.

Real Mickey led the league in OBP in 1955, 1962, 1964.

TZ Mickey would still have led:
1955 over Al Kaline .444 to .421
1962 over former teammate Norm Siebern .433 to .412
1964 over  Bob Allison .495 to .404

TZ Mickey would have also led in OBP in 1958 over Ted Williams .487 to .458.

Real Mickey's career splits by how the pitcher throws:
Where throws OBP
home L .414
home R .435    TZ: .387
road  L .436
road  R .404    TZ: .411

Year   TZ Real  TZ-Real
1951 0.262 0.349 -0.087
1952 0.404 0.394 0.010
1953 0.392 0.398 -0.006
1954 0.399 0.409 -0.010
1955 0.444 0.430 0.014
1956 0.450 0.465 -0.015
1957 0.478 0.515 -0.037
1958 0.487 0.443 0.044
1959 0.325 0.392 -0.067
1960 0.417 0.401 0.016
1961 0.465 0.452 0.013
1962 0.433 0.487 -0.054
1963 0.474 0.443 0.031
1964 0.495 0.426 0.069
1965 0.374 0.380 -0.006
1966 0.376 0.392 -0.016
1967 0.397 0.393 0.004
1968 0.311 0.386 -0.075
       .413          .421          -.008
Year   TZ Real  TZ-Real