Jarrett Seidler at Baseball Prospectus writes about Bobby Witt Jr. and defensive projections for young players. [$]
Infield range is pretty tough to actually scout, if I’m being brutally honest. You can tell when a player is too slow or not agile enough for a position, sure, but a lot of what gets picked up as range in modern defensive stats is hidden to the naked eye...
So now we’re back to Bobby Witt Jr. He does the flashy, noticeable things on defense—enough of them to be perfectly fine at third base.