"Being here is good because you learn from other prospects," Martes said. "It certainly helps your career to battle with prospects from higher levels than yourself and more experience than yourself, that way you can learn more about baseball."
Martes went 9-6 with a 3.30 ERA and 131 strikeouts in 25 games (22 starts) with Double-A Corpus Christi during the regular season and got off to a bit of a slow start in the AFL.
However, the right-hander came to Arizona to work on his secondary pitches, and when he has full control of his changeup -- as he did during Monday's seven-strikeout performance -- it's easy to see the potential.