WASHINGTON (AP) — Shelby Miller threw five shutout innings and Jean Segura had three hits to reach 200 for the season as the Arizona Diamondbacks beat the Washington Nationals 3-0 in a rain-shortened game Wednesday night. Gio Gonzalez (11-11), Washington's projected No. 3 starter in the NL Division Series against the Los Angeles Dodgers, struggled in his final tune up before the postseason. [...] baseman Daniel Murphy remains out with a strained glute. Nationals RHP Joe Ross (7-5, 3.48 ERA) is scheduled to make his third start since returning from the disabled list Sept.18 against Diamondbacks LHP Robby Ray (8-14, 4.77).