It allows for comparisons between all players, but you have to allow for differences in volume, for example, you can't compare a pitcher with 50 innings to a pitcher with 5 innings, apples-to-apples.
"No need to keep Devers, he will be on a big boy contract by the time the sox are relevant again," Jacko says.
(Even if he's right that we won't contend again until 2023 or 2024, Devers will still be in prime years.)
His credibility as a baseball analyst flies out the window sometimes...