This story was excerpted from Anthony DiComo's Mets Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

Kodai Senga (back) said he does not have a timetable to return to the mound, while Luis Robert Jr. could join him on IL as he awaits follow-up tests on his ailing back.

Luis Robert Jr. doesn’t seem poised to join the Mets lineup anytime soon. The 28-year-old was day-to-day with lower back tightness, however, the injured list could be the next step as his back didn’t respond well to treatment.

Seeking answers on struggling right-hander Kodai Senga, the Mets finally found one -- just not one that gives them any sort of clarity for the months ahead. Following his third consecutive poor start,

The Mets place Kodai Senga on the IL after struggles, raising new questions about his role and future in the rotation.

Which is one more reason Kodai Senga needs to figure himself out quickly. The leash cannot be long for Senga, whose turn manager Carlos Mendoza would not guarantee after his last blow-up, although the club decided to give the right-hander another start and a few more days of rest.

In many ways, the Mets’ sweep at the hands of the Rockies this weekend was more disheartening than the 12-game losing streak that preceded it. The streak was one thing -- a cavalcade of poor play, exacerbated by bad luck,