Gray's 185 strikeouts in 2016 were a club rookie mark. Now his improved curveball accompanies the slider as a put-away pitch. Last Aug. 23, Gray fanned 10 in six innings at Miller Park in a no-decision. It's his first opener.
Guerra has pitched professionally all over the world, including Spain and Italy, on his way to the Brewers via the waiver wire. At 32, he has finally cracked Major League Opening Day roster.
The Brewers and Rockies head into their Opening Day matchup at Miller Park at 1:10 p.m. CT/12:10 MT on Monday with visions of shaking up their respective divisions.