Arizona just won a three game series against the Pirates last week, and kept that momentum going as they swept the Nationals in the next three games. They have now won five of their last six, and are holding on to the final Wild Card spot. On Friday night Arizona is sending out their most trusted pitcher, as Pfaadt has started 21 games this season, and leads the team in innings pitched. Pfaadt started against the Pirates last week, in a game that Arizona won 9-5. He has given up one or fewer earned runs in four of his last five starts, and has only allowed two home runs in the same amount of games. Take the D-Backs to grab a win in the series opener here.