Martinez (4-4) allowed four runs on seven hits and three walks while striking out three over five innings to take the loss Friday against the Diamondbacks.
Martinez struggled to keep the Diamondbacks off the bases while the Cardinals' offense was unable to provide much run support in a losing effort. He's now allowed four runs in three of his last four outings, and during that stretch, his ERA has grown from 1.93 to 3.56. He'll make his next start Wednesday against the Cubs.