The Knicks’ injury plight is not getting any better. 

OG Anunoby, Quentin Grimes and Julius Randle have been ruled out for Tuesday’s Garden battle with the Grizzlies.

Mitchell Robinson also will miss his 30th straight game while rehabbing from ankle surgery. 

Anunoby will be out for a fifth straight game with right elbow inflammation.

Previously, he had been wearing kinesio tape on his shooting elbow during games, but he did not feel comfortable warming up Jan. 29 in Charlotte. He was scratched from that game and has not played since. 

There has been little update on the condition of Anunoby, who in his first six years with the Raptors played at least 70 games in a season just once.

Coach Tom Thibodeau said Anunoby’s elbow “flared up” before the Hornets game and has reiterated that the 26-year-old is “day-to-day.” Anunoby had played in his first 14 games with the Knicks, averaging 35.7 minutes per contest. 

Grimes also has been regarded as day-to-day and will miss his third straight game with a right knee sprain. The shooting guard suffered the injury while trying to guard Utah’s Collin Sexton last Tuesday, his knee appearing to twist and Grimes coming up lame. Grimes returned in that game but has not appeared since. 

Randle will miss his fifth straight contest since dislocating his right shoulder during a win over the Heat. On Thursday, the Knicks said they would reevaluate Randle in two to three weeks, which would be Feb. 15 at the earliest. Randle has begun rehabbing the shoulder with the hope of playing again this season, which would mean avoiding (or delaying) surgery. 

The Knicks have won three of the four games in which Randle and Anunoby have sat, though their shooting went ice cold in Saturday’s loss to the Lakers. 

The team already was short on offense before the injuries. Expect Jalen Brunson to continue to try to carry a significant load, and Donte DiVincenzo — averaging 23 shots and 15.5 3-point attempts in the four games — to continue seeing a green light. 

“Down two starters, Mitch, right now missing like three or four guys,” Josh Hart said Saturday. “We still got enough to win, still got enough to compete.” 

The Grizzlies, though, are in even worse shape than the Knicks. 

Out for Memphis will be Ja Morant (shoulder), Desmond Bane (left ankle sprain), Brandon Clarke (Achilles), Victor Oladipo (knee), Marcus Smart (finger), Ziaire Williams (hand) and Jake LaRavia (ankle sprain). 

Listed as “doubtful” are Jaren Jackson Jr. (right hip soreness) and Xavier Tillman (knee). 

Questionable are Derrick Rose (left hamstring soreness), Santi Aldama (tailbone contusion), John Konchar (right calf contusion) and Vince Williams Jr. (left wrist soreness). 

Brunson was a nominee for Eastern Conference Player of the Week after posting 34.3 points and 6.8 assists per game while shooting 49.1 percent from the field in four games from Jan. 29 to Feb. 4. 

Hawks guard Trae Young (31 ppg, 11.3 assists, 65.5 percent from 3) was the winner.