Nets forward Michael Porter Jr. has been diagnosed with a left hamstring strain following an MRI performed Wednesday, a new setback that adds more uncertainty to the finish line of Brooklyn’s season.

The Nets said he will be re-evaluated in three weeks, but that is just days before the final weekend of the season.

The Brooklyn Nets announced on Thursday that forward Michael Porter Jr. will miss the next two to three weeks with a left hamstring strain.

Noah Clowney was ruled out for Friday’s Knicks at Barclays Center because of a sprained right wrist. Nets head coach Jordi Fernández added that the third-year ...