Jim Keesey vs. Jack O'Brien — Career Comparison

On the career numbers, Jack O'Brien posted the stronger offensive profile against Jim Keesey. Jack O'Brien posted stronger numbers in OPS (.700 vs .686) and slugging (.369 vs .353). Jim Keesey had the advantage in batting average (.294 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.