I think Eflin is the most advanced of the three, he added a good 2 seamer to his repertoire and has a nice changeup.
Pivetta has the most hittable FB, he's almost strictly 4 seamer, and while he has a good curve, his change is meh.
Velasquez has the best 4 seamer (good late break) but no 2 seamer, a potential plus slider but another with a meh change.
Better defense will help them this year, but I think they're keeping a close watch on the Allentown rotation.
De Los Santos throws just as hard, we'll see if the new PC made any adjustments.
Irvin has the junk, can he sustain 91+ velocity? Is Romero ready? Anderson struggled his first couple starts after a strong spring, coming back to earth or bad weather? Suarez and Eickhoff should be in the mix.
Only need one or two out of six to get hot and take the next step.