Sewald cut by Mets, sent back to 51s

man roster. The Mets probably will have to make room for utilityman Ty Kelly on the 40-man roster, as outfielders Brandon Nimmo and Juan Lagares are injured.

The Mets’ bullpen is still in flux, thanks in part to some uncertainty in the rotation. Opening Day rosters need to be set by Sunday.

Among Robert Gsellman, Seth Lugo and Zack Wheeler, Gsellman has the fifth-starter spot pretty much sewn up.

But with Steven Matz scratched from his last start because of elbow irritation, a spot could open for Lugo or Wheeler.

If the Mets take Wheeler, who will be held to a strict innings limit, Lugo could be forced to the bullpen.

With Jeurys Familia expected to be suspended to begin the season, it looks as if the Mets could take Josh Smoker, Josh Edgin and Rafael Montero in the bullpen — all of whom played in Las Vegas at some point last season.

But if Lugo is forced to the bullpen, the move would change that equation.

In that case, Edgin, who is out of options, or Montero probably would be the one affected.

Either way, the Mets face several decisions in the next few days. They’ll play the 51s on Thursday in Florida before heading to New York to face Army on Friday. Contact Betsy Helfand at bhelfand@reviewjournal.com. Follow @BetsyHelfand on Twitter.