John O'Connell vs. Dan Phelan — Career Comparison

On the career numbers, Dan Phelan posted the stronger offensive profile against John O'Connell. Dan Phelan posted stronger numbers in OPS (.594 vs .459) and slugging (.344 vs .196). John O'Connell had the advantage in on-base percentage (.263 vs .250). By the career numbers, Dan Phelan had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.