Singer is no surprise, at 23 he is ready for AA.
Grullon is a surprise, his plate discipline took a step back in Clearwater and he's only 21.
So he'll probably repeat Reading to start next year, but this gives him an early taste of a higher level. I think he's probably a better prospect than Alfaro right now, due to his defense, just has to show some improvement offensively, but given his age and his position, will be given a couple years to find his stroke.
Cabral might be to give Lartique more PT.
Bossart should be the starter at Clearwater with Grullon promoted.
Aaron Brown is being pushed for an obvious reason, at 25 he has to show something quickly.