Kyrie Irving injury adds to Mavericks’ uncertainty after painful collapse vs.

MEMPHIS — Mavericks superstar guard Kyrie Irving walked out of FedExForum on Monday night with a boot on his right foot, a major concern after he reaggravated the soreness in his right big toe that has plagued him for almost two weeks.

Irving played through the pain after trash-talking, bully-ball defender Dillon Brooks stepped on the back of his foot midway through the third quarter, but his 0-for-8 shooting struggles in the fourth quarter reflected the Mavericks’ team-wide spiral.

A painful night in Memphis in more ways than one.

The Mavericks remained shorthanded without Doncic (left thigh strain) for a fifth consecutive game and blew a 16-point lead over the last 13 minutes in FedExForum.

They ailed to seal their first three-game winning streak since early February and missed a crucial opportunity to maintain their top-six Western Conference playoff standing with just 10 regular-season games remaining.

Dallas shot 3 of 21 from the field in the fourth quarter and did not make a field goal after rookie Jaden Hardy hit a jumper with six minutes remaining in the fourth quarter. They missed their last 10 shot attempts as Christian Wood’s five free throws represented their lone scoring production down the stretch.

Without superstar Ja Morant, the Grizzlies answered the Mavericks’ 10-point scoring advantage in the third quarter (36-26) with a 29-12 fourth-quarter burst.

“We just couldn’t score,” coach Jason Kidd said. “We had great looks, so I think if we had that opportunity again, we’d feel that we’re comfortable that we could’ve gotten that win.”

Irving’s injury will add more uncertainty to the No. 7 Mavericks’ preparation to face the No. 6 Golden State Warriors (37-36) on Wednesday in American Airlines Center, likely Dallas’ most pivotal single game yet with the teams a half-game apart from guaranteed playoff position and the play-in tournament?

Irving said the walking boot was “just precautionary” to protect his right foot, which twisted at an odd angle that reignited the pain on the top of his right big toe that forced him to miss three games March 11-15.

“I just got to make it back home to Dallas and then start my recovery work and do everything I can to prepare for the next game,” Irving said. “Take time to rest and exhaust all my options possible to be ready to play the next game.”

Irving’s status makes Doncic’s looming return even more important.

Though Doncic said last week he hoped to play in Memphis, the Mavericks ruled him out just after shootaround ended Tuesday morning. Still, the 24-year-old superstar participated in the team’s morning walkthrough and remained at the arena for an extra workout after coaches and teammates returned to the hotel — just as he did before the Lakers game Friday.

The extended behind-the-scenes work is likely a product of the Mavericks medical and training…