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New Orleans Pelicans forward Anthony Davis (23) enters the court followed by New Orleans Pelicans forward DeMarcus Cousins (0) for a preseason game against the Chicago Bulls Smoothie King Center in New Orleans, La. Tuesday, Oct. 3, 2017.

Advocate staff photo by MATTHEW HINTON

New Orleans Pelicans forward Anthony Davis left Tuesday night's 103-93 loss at Portland with a left knee injury and did not return.

Davis, who limped off the Moda Center court in Portland with more than five minutes remaining in Tuesday's first quarter, walked off the floor under his own power before his knee was examined in the Pelicans locker room.

The extent of Davis' knee injury was not immediately clear, but the All-Star forward underwent an MRI before the end of the second quarter. Davis' MRI came back negative, coach Alvin Gentry told reporters after the game. 

"(We) don't know a whole lot," Gentry said. "Trainers just said he got an MRI and it came back negative. That's all I know."

Davis, who had swelling in his knee, is considered day-to-day and will be closely monitored after his MRI revealed no structural knee damage, according to multiple reports early Wednesday morning.

Gentry said he hadn't spoken to Davis within minutes after Tuesday's game, so he was unaware when Davis initially suffered the knee injury.

"I really don't know," the coach said. "I have not talked to him yet, so I don't know. So it would be pure speculation if I said something. I don't really know if it was pregame, yesterday, today or earlier in the game or whatever. I don't really know that one."

Davis’ mid-game injury history is well documented.

The four-time All-Star forward, who did not play or dress in seven full games last season, exited 12 games during the 2016-17 season because of a rash of different ailments. The Pelicans went 5-7 in games Davis exited with an injury, ranging from lower back issues to thumb sprains.

Knee issues are nothing new to the Davis, either.

Davis, 24, was sidelined for months to recover from a left knee procedure that ended his 2015-16 season.

Before Tuesday's injury, Davis became the first player since at least 1983-84 to score at least 95 points and collect at least 50 rebounds in the first three games of the season.

He joined Kevin Garnett as the only players in the past 40 years to record more than 25 points and 15 rebounds in the first three games of a season.

The Pelicans have five players expected to miss roughly a month because of injuries: guard Rajon Rondo (core muscle), forward Solomon Hill (hamstring), center Omer Asik (illness), guard Frank Jackson (foot) and center Alexis Ajinca (knee).