Jack O'Brien vs. Unknown Southy — Career Comparison

On the career numbers, Jack O'Brien posted the stronger offensive profile against Unknown Southy. Jack O'Brien posted stronger numbers in OPS (.700 vs .606) and slugging (.369 vs .273). Unknown Southy had the advantage in batting average (.273 vs .266). By the career numbers, Jack O'Brien had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.