2.1 or else!

It’s not necessarily speed,it’s ability to hit, field, and throw.

The 40 yard dash doesn’t really matter. You should be more concerned with how quick you get out of the box and down the line.
All in all, that should take you less than 5 seconds. I can do it in 4.7 and im not the fastest guy, so if you can do that then you’ll be in good shape.
Plus baseball isn’t all about speed. If you aren’t necessarily the fastest guy, but you can get out of the box quickly and get to full speed quickly then you will be set.

Depend on the position:
SP:5.5
1B:5.0
2B:4.7
3B:4.7
OF:4.5
SS.4.5

(Those are Just Hypothetical Guesses)

And to answer your second question Anything over 4.5 can be considered fast.

You shouldn’t be overly concerned about that. Your speed won’t matter if you do other things well.

you dont need speed for baseball.

5.5 and under