Matz (side) will need to get through a long-toss session Monday, bullpen session Tuesday and 90 to 100 pitches in an instructional league game in Florida on Thursday before he deemed ready to make the Mets' divisional series roster, ESPN New York reports.

EDGE Analysis

If Matz, who had an injection Friday to relax his back, which has been spasming, is able to get through all three of those requirements without incident, he could be added to the roster and be penciled in as the Game 4 starter. If not, the Mets may go with a three-man rotation or start Bartolo Colon.