Zach Duke allowed four runs on nine hits in six innings of work on Sunday, falling to 2-4 in Arizona's 4-2 loss to the Cardinals. He struck out one and walked one, with his biggest mistake coming in the third, where he served up a two-run homer to David Freese. Through nine starts and 51 innings, Duke is the owner of a 5.47 ERA and 1.63 WHIP. That's no way to stay in a rotation long term.