And if they name a New York Yankees reliever you've never heard of the best arm in his league? Baseball America published their annual "Best Tools" survey in their August/September issue, voted on by league managers at every level. But the most surprising one by far, and the one that requires the most explanation, was Morrill taking home the honor as the SAL's best reliever. He'll also be taking his talents to the Arizona Fall League this October to open additional eyes in the game's best postseason prospect showcase. Best reliever at the level.