can we trow caltrops with a great club like a baseball

my player asked me if he could do that and i wonder too. help me

I mean, there's nothing in the official rules about it, but that sounds hilarious so I'd probably allow it. 

A sensible way to rule it might be to treat it as a thrown improvised weapon that deals piercing damage.

do you think if the player is a orc the caltrop could deal instead of 1d4 1d6 could be a great idea

I mean, there's nothing special about an orc that'd make them better at Babe Ruthing caltrops into an enemy than another character with the same stats.

That said, you're the DM. If you think it's a reasonable amount of damage, it's a reasonable amount of damage. It's certainly not going to unbalance the game or anything.

ok thanks