We're deep enough into MLB's 2019 spring training schedule to make initial observations.

Small-sample caveats apply, obviously. None of the exhibition stats posted thus far are necessarily predictive.

That said, it's worth checking on each club's top MiLB chip, per Joel Reuter's most recent prospect rankings for Bleacher Report. How are they faring in the exhibition slate (if they've played at all)? Are they close to making an impact at the highest level?

Let's examine team-by-team.

Arizona Diamondbacks: RHP Jon Duplantier

Jon Duplantier has flashed a plus fastball and a four-pitch repertoire begetting a frontline MLB starter while striking out two in a pair of scoreless innings this spring.