John O'Donnell vs. Unknown Patterson — Career Comparison

Looking at the career totals, John O'Donnell and Unknown Patterson are closely matched on the surface stats. John O'Donnell posted stronger numbers in slugging (.250 vs .000) and batting average (.250 vs .000). Unknown Patterson had the advantage in on-base percentage (.500 vs .250). By the career numbers, John O'Donnell had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.