DiMaggio v. Mantle: BA and Slugging by year and career.

Click for data.  Data sorted on percent above American League (AL) for batting average (BA) and slugging.  AL averages NOT weighted by season in career percentage.

BA:
Mantle takes the top spot, 43.18%, and two of the top three.  Excluding partial seasons 1949 and 1963, one each, the top ten are split.

The two lowest are both for 1951, the only season that they were teammates: Mantle 1.82%, DiMaggio .21%.  Mantle's final season, 1968, was third lowest: 2.9%.  Mantle has five of the six lowest.

Dif Pct BA:
DiMaggio 20.82%
Mantle 18.73%

Slugging:

Mantle takes the top three.  Excluding partials 1949 and 1963, Mantle takes six of the top ten.

The two lowest are both for 1951, the only season that they were teammates: Mantle 16.12%, DiMaggio 10.58%.  Mantle's final season, 1968, was third lowest: 17.23%.  Mantle has six of seven the lowest.

Dif Pct:
DiMaggio 32.42%
Mantle 32.21%