Rockies 8, Diamondbacks 5: Troy Tulowitzki hit a tiebreaking homer in the sixth among his three hits and Justin Morneau added a two-run shot later in the inning as visiting Colorado added to Arizona's miserable start.

Carlos Gonzalez, Jordan Pacheco and Charlie Blackmon added RBIs while Nolan Arenado went 2-for-4 to extend his hitting streak to 18 games for the Rockies, who have won eight of their last 11. Franklin Morales (3-1) yielded four runs and seven hits in five innings while LaTroy Hawkins pitched a perfect ninth to earn his eighth save.

Wade Miley (2-3) suffered his first career loss in eight decisions against Colorado after allowing seven runs and 10 hits in six innings. Gerardo Parra (home run) and Paul Goldschmidt (RBI) had three hits apiece, Miguel Montero drove in a pair and Martin Prado scored three runs for the Diamondbacks (8-21), who are 2-14 at home.

Tulowitzki and Gonzalez hit back-to-back doubles with two out in the first before Parra took a 3-1 pitch out to right in the second. Arizona answered Tulowitzki's two-out, two-run double in the third with Montero's sacrifice fly and Aaron Hill's RBI single in the bottom half after Prado walked with one out and Goldschmidt doubled.

Pacheco delivered a one-out RBI double in the fourth and Goldschmidt replied with a run-scoring groundout in Arizona's half. Tulowitzki put the Rockies on top for good when he led off the sixth by depositing a 2-2 pitch just over the wall in left and Morneau reached the pool area in right-center three batters later to make it 7-4.

GAME NOTEBOOK: Morneau extended his hitting streak to 12 games while Arenado's is the longest active streak in the major leagues. ... Colorado leads the National League in runs scored at 5.5 per game. ... Rockies RHP Adam Ottavino yielded Montero's RBI single in the seventh inning - his first run allowed after 11 2/3 scoreless frames to start the season.