What we're seeing in the minors is the reason never to panic early in the year.
We just don't know what adjustments they made in the FIL and the spring, and whether that's caused some players to get off to slow starts.
Romero for example, after a horrible start, has 3 good starts in a row.
Moniak is starting to hit, Haseley, Ortiz, etc.
Grullon doesn't surprise me, he's only 22 in Reading, he's been known for BP HRs, so it was just a matter of translating BP power to game power.
One nice thing, Alfaro is so athletic that he could play other positions if Grullon pushes for PT in a couple years - I think with a little work he could be a late inning RP with that arm, as well as 3B and RF.