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The Arizona Diamondbacks try to complete a sweep and stay alive for a postseason berth Monday, when they take on the struggling Colorado Rockies in the finale of their four-game series at Coors Field. Aaron Hill hit a tiebreaking three-run homer and Wil Nieves collected four hits and an RBI as Arizona posted a 10-7 triumph on Sunday to remain 4 1/2 games behind St. Louis for the second wild-card spot in the National League with 10 contests remaining. Winners of seven of their last eight, the Diamondbacks have recorded 33 runs and 48 hits over the first three games of the series. The loss was the season-high ninth in a row for Colorado, which has dropped 16 of its last 18.