Willie Mays and Hank Aaron were the two greatest right handed hitters in the 1950s and 1960s.  Below is a rough estimate of how they might have done had they switch hit.  As mentioned in previous posts leading up to this percentage differences during those seasons are using this as the base:
vs RHP as RHB (Versus Right Handed Pitcher as Right Handed Batter).
The basic reasoning is that any batter can learn to switch hit and that these two great hitters would get at least the advantage against righty pitchers as all lefty MLB batters averaged during those seasons.
Their new career averages are weighted by the percentage of plate appearances (PA) or at bats (AB) as appropriate against righty and lefty pitchers.
Click this link to view detailed data.
                     BA OBP  SLG  OPS  
Aaron career 0.305 0.374 0.555 0.928  
Mays career 0.302 0.384 0.557 0.941  
       
Mays Split                    BA   OBP   SLG  OPS    PA%    AB%
Mays vs RHP as RHB 0.300 0.373 0.541 0.915 71.19% 72.32%
Mays vs LHP as RHB 0.305 0.410 0.593 1.003 28.81% 27.68%
Mays                      BA   OBP    SLG  OPS       
Mays RHP - LHP -0.005 -0.037 -0.052 -0.088  
Mays Pct Dif        -1.67% -9.92% -9.61% -9.62%  
       
Aaron Split                      BA   OBP   SLG  OPS    PA%    AB%
Aaron vs RHP as RHB 0.299 0.362 0.537 0.898 73.77% 74.60%
Aaron vs LHP as RHB 0.318 0.405 0.603 1.007 26.23% 25.40%
Aaron                       BA    OBP   SLG    OPS       
Aaron RHP - LHP -0.019 -0.043 -0.066 -0.109  
Aaron Pct Dif        -6.35% -11.88% -12.29% -12.14%
       
MLB Pct Dif 8.19% 10.51% 9.72% 10.01%  
Mays                                        BA   OBP   SLG  OPS       
Mays vs RHP + MLB Pct Dif 0.325 0.412 0.594 1.007  
Mays new career                0.319 0.412 0.593 1.005  
Aaron                                       BA    OBP  SLG   OPS       
Aaron vs RHP + MLB Pct Dif 0.323 0.493 0.589 0.988  
Aaron new career               0.322 0.470 0.593 1.063
Stimulating, provocative, sometimes whimsical new concepts that challenge traditional baseball orthodoxy. Note: Anonymous comments will not be published. Copyright Kenneth Matinale
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