It stinks to see Vielma DFA'd, but with his AAA performance, he was going to be axed in November, as mentioned above. He's just 23, so perhaps he can eventually find his way by improving his bat as he'll get about that .490 OPS he's got in Rochester. Even then he only hit .690 OPS in AA (while hitting .286!), so there's virtually no pop in his bat. Great defense, no bat.