Spit on ball

[UmpSteve]

The Rawlings bag produces powdered rosin, that is exactly identical to the rosin that comes out of the powdered rosin bag in every possible way. I can tell you from extended use, that it behaves in every fashion like powdered rosin. No residue on the ball, drys the hands falls off.

You missed one part of my point. If it is "exactly identical", why would you have a preference?

It isn't the bag; maybe not Rawlings, but I know I have seen numerous bags of powdered rosin that are made with the same sealed and sewn bag. If the material is the same, then
1) you wouldn't have a preference, and
2) it would be approved.

[AlwaysImprove]

I already answered your first question. It performs better in really wet situations. Powdered rosin clogs and turns to mush. Rock Rosin, delivered as a powder Rosin, works better. So, the reason I prefer it is the improved delivery mechanism.

I believe it is approved.

[MTR]

I think the book may be more correct if they changed to Rosin, not Resin. MHO.

Rosin is a particular type of Resin. Rosin is Resin with the volatile terpene components removed.

All of the manufacturers call their products Rosin. I do not even think you can use Resin as a drying agent, unless it has been processed into Rosin, which is still a resin, but more specifically called Rosin. Does that make sense?

Not as much as my post as to why it reads "resin".