The Mets placed Williams on the 15-day injured list Monday due to a right shoulder strain.
Williams missed time recently with what was described as right arm fatigue, and now he's shelved with a strained shoulder. The Mets are optimistic that Williams will be in line for a relatively brief absence, per Anthony DiComo of MLB.com. The only player on the Mets' active roster other than Williams to record a save this season is Daniel Duarte, who picked up his second career save last week when Williams was unavailable. Duarte could be the next man up to close for the Mets, but Kodai Senga is also a candidate.