INSIDE THE MATCHUPS

METS: Gsellman joins the Mets rotation following a seven-start audition last September, when he went 4-2 with a 2.42 ERA. The righty opened the season in the rotation after posting a 1-2 record with a 2.31 ERA and 15 strikeouts across 23 1/3 innings in spring training.

MARLINS: Conley, who turns 27 next month, has just two seasons under his belt, and has been consistent across 36 career starts. He has a 3.82 ERA across 200

1/3 innings for his career. The lefty has had some control problems, however, walking 62 while giving up 13 home runs in 2016.