The Mets’ roster is in an awkward position right now. Since designating Joey Wendle for assignment, they are operating without a real backup at second base and shortstop. The upside to this deficiency is that it allows Brett Baty and Mark Vientos to both be on the active roster at the same time, and the two have split playing time over the past several games. But this is not an arrangement that can last forever; Francisco Lindor and Jeff McNeil will eventually need some days off, and every game the Mets play without a genuine backup at those two spot runs the risk of being forced to play an out of position player there if one of the two gets hurt during a game.