Unknown Mangrum vs. John O'Connell — Career Comparison

On the career numbers, John O'Connell posted the stronger offensive profile against Unknown Mangrum. John O'Connell posted stronger numbers in OPS (.472 vs .000) and on-base percentage (.222 vs .000). By the career numbers, John O'Connell had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.