Beating the Dodgers for sixth time in seven games, though, could prove more difficult as they take on ace Clayton Kershaw and rookie sensation Yasiel Puig on Monday night in Los Angeles.
The Diamondbacks (35-28) lost 6-2 to San Francisco on Sunday as their advantage in the division was reduced to 1 1/2 games over the Giants and Colorado. Arizona has dropped three of four.
Its rotation has played a big part in the recent struggles, posting a 10.80 ERA in the past three losses. The poor performances have led to a heavy workload for the relievers, who pitched at least four innings each time in those defeats.
"Our starters have been giving up a lot of runs which puts a big strain on the bullpen,'' manager Kirk Gibson said. "(The relievers) are exhausted down there and it kind of has an effect on the players and they haven't been as sharp lately.''
Gibson's starters have had no such problems against the Dodgers (27-35), recording a 2.93 ERA in the six matchups this season and allowing two or fewer earned runs four times. The rotation turned in three solid performances as Arizona swept a three-game set in Los Angeles from May 6-8.
They'll try for a fifth consecutive victory over the Dodgers when they face Kershaw (5-4, 1.93 ERA), who's among the major league ERA leaders but is winless in his last three starts.
While the left-hander has been solid over that stretch, he hasn't been his usually dominant self, posting a 4.05 ERA after giving up one or no runs in his previous five outings.
Kershaw has also pitched well against Arizona of late but has gone 0-4 in his last five matchups, due largely to almost nonexistent run support. He's posted a 1.98 ERA in the past four but has received a total of two runs of support.
Kershaw went seven innings and gave up two runs - one earned - in a 3-2 loss to the Diamondbacks on May 8. Paul Goldschmidt hit one of his two home runs in that game off Kershaw and went 7 for 13 with four homers and nine RBIs in the series.
Goldschmidt has two hits in 17 at-bats against Kershaw.
Arizona's Wade Miley (4-5, 4.92) gave up two runs over 7 2-3 innings for the victory and is 3-0 with a 2.17 ERA in four career starts at Dodger Stadium. Miley, however, is 1-4 with a 7.94 ERA in his last five starts overall.
Though he allowed a season-high 11 hits and three runs over 6 2-3 innings, the left-hander snapped a four-start losing streak in a 10-3 win over St. Louis on Wednesday.
Miley and the Diamondbacks will get their first look at Puig, who went 3 for 5 with a double in the Dodgers' 8-1 loss to Atlanta on Sunday.
Puig is 13 for 28 with four homers and 10 RBIs since his debut last Monday, while also exhibiting a powerful throwing arm that has resulted in two outfield assists.
"He's unbelievable," teammate Luis Cruz told the team's official website. "He's been hitting so far and hopefully he continues to do it and helps us win some games."
The injury-plagued Dodgers have won four of seven with Puig in the lineup, though they dropped the last two to the Braves.
Teammate Adrian Gonzalez has gone 10 for 21 with a homer and two doubles in this season series.