Martinez extended his streak without an earned run to 15 innings with a scoreless first inning against the D-backs. But he gave up a run in the second. In all, he was charged with that lone run on five hits in six innings.
With Andrew Heaney and Nick Tropeano in waiting, pressure is on Santiago to perform if he wants to keep his rotation spot. And so far, he's responded. The 27-year-old has allowed five runs on 13 hits and six walks in 18 1/3 innings, striking out 17.