Robert Foster vs. Jon Singleton — Career Comparison

On the career numbers, Robert Foster posted the stronger offensive profile against Jon Singleton. Robert Foster posted stronger numbers in OPS (.710 vs .645) and on-base percentage (.353 vs .300). Jon Singleton had the advantage in home run production (29 career HR at a higher rate). By the career numbers, Robert Foster had the stronger overall case — though those totals don't account for the eras and run environments each player worked in.