Frank Heifer vs. John Sullivan — Career Comparison

Looking at the career totals, Frank Heifer and John Sullivan are closely matched on the surface stats. Frank Heifer posted stronger numbers in OPS (.680 vs .582) and slugging (.400 vs .270). John Sullivan had the advantage in on-base percentage (.312 vs .280). By the career numbers, Frank Heifer had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.