"We liked him and we felt that he has a chance to make our club as a left-handed reliever," Avila said. "It has nothing to do with Wilson. It's more that we just like Stumpf. It's not bad to have both."
The Rule 5 Draft allows teams to draft eligible players who aren't on their club's 40-man roster, generally after five professional seasons. Teams invest $100,000 to make a selection, who must remain on the Major League roster the entire season or be offered back to their previous club for $50,000.
Stumpf turns 26 years old next month.