I think Martin became underrated after his numbers fell off from his first three seasons. Martin made the ASG in 2011 but his numbers were propped up by his huge April (and a huge August; he had two months with an OPS above .900, below .700 in the other four months). He also hit for good average in his first three seasons (.280+) and only had one more season above .250 for the rest of his career. He does a lot of things that casual sports fans don't really care about.