The set-up: Neither the Diamondbacks nor the Rockies contended in 2016 (Colorado was only 75-87 and Arizona even worse at 69-93) but the Rockies are currently atop the NL West at 18-12, with the D'backs just a half-game back at 18-13. Arizona closed the gap to a half-game with last night's 6-3 win in Coors, led by Paul Goldschmidt's two HRs and season-high five RBI.

The pitching matchup: A pair of left-handers take the mound on Saturday night, Patrick Corbin (2-3 & 2.29 ERA) for Arizona and Tyler Anderson (1-3 & 7.71 ERA) for Colorado. Corbin allowed just two hits over 6 1/3 scoreless innings in a no-decision against Colorado last Sunday and is 5-2 with a 4.48 ERA in 13 career starts against them (team is 10-3). Corbin comes in on a roll, having allowed just four ERs over his last three starts (1.86 ERA), while striking out 23, against just four walks, in 19 1/3 innings. Anderson has to be happy that April is over. The team actually split his six starts last month, despite him posting a 7.71 ERA, 1.58 WHIP and .303 BAA. He gave up a season-high six runs in five innings (allowed three HRs) but escaped with a no-decision against Arizona in his last start on April 29. Speaking of HRs, he's allowed nine in his 30 1/3 innings this season. Anderson has three no-decisions against Arizona but has posted a 7.80 ERA and 2.09 WHIP in those outings (team is 1-2).

The pick: The over may be tempting to some but Corbin comes in pitching very well plus Anderson is not as bad as he's pitched so far. In fact, he allowed three ERs or less in 10 of his 12 home starts last season. Make the Under a 10* play.