Chacin hasn't been overly impressive through the first four starts of his Brewers career.
He held the Mets to just a run his last time out -- marking a season-low for runs allowed -- but only worked four innings and gave up five hits with three walks during that stretch, striking out four.
Chacin didn't face the Marlins last season but is 1-4 with a 5.22 ERA in seven career appearances against Miami, including five starts.