At the end of the 1887 season Tip O'Neill also led the American Association in triples, doubles, total bases, slugging average, runs, on base percentage and hits.

Ty Cobb, during his Triple Crown season, simultaneously led the American League in stolen bases with seventy-six, making him the only recipient to also lead in stolen bases.

Countless "reliable" sources list Heinie Zimmerman as the winner in 1912; however, both Baseball Almanac and Major League Baseball have corrected his RBI total (it was one-hundred three but should be ninety-nine) due to ongoing research into box scores. The same mistake can be seen in other sources who list Paul Hines as a winner in 1878 — who led in home runs and runs batted in, but failed to qualify for the batting average leader.