Jackie Bradley ranks 3rd in MLB in innings played in CF this season.
In that time, he ranks 8th in Balls in Zone and 8th in plays. So right away, his opportunities are limited compared to other center fielders.
Defensive metrics like UZR and dWAR also give significant credit to plays made out of zone. With 40 OOZ plays, Bradley ranks 14th out of 17 qualified center fielders. The man standing in RF ranks fourth in OOZ plays, taking a significant amount away from Bradley. As several other center fielders don’t have the “handicap” of an elite defender in RF taking their plays, they benefit. It’s not a flaw. It’s a measure of accomplishments, not ability.
What JBJ’s reduced defensive metric is saying is that he has not been as involved in CF as many others around the league. His innings are high, but his opportunities relative to those innings to make routine plays are below average, and his opportunities to make elite defensive plays are very low.
Again, these stats are measures of accomplishments, not ability. Basically Bradley isn’t getting any credit for standing in CF while other fielders make plays.
If you are a believer in lineup protection, and that certain hitters get pitched around and it negatively affects their offensive stats, it’s a similar concept - reduced opportunity. If a hitter struggles while getting pitched around, is he a worse hitter than one who repeatedly crushes meatballs?
Again, this is not a flaw...