CLEVELAND — So much for all that concern over Josh Hart’s sprained left ankle. 

Listed as doubtful after practice on Monday, the Knicks upgraded the valuable reserve guard to questionable following Tuesday’s shootaround at Rocket Mortgage FieldHouse, and he was available for Game 2.

Earlier in the day, The Post spotted Hart walking without a limp before leaving the arena.

He offered a thumbs up.

Asked how he was feeling, Hart responded: “Good,” with a smile.

Hart said prior to tip-off he woke up on Tuesday feeling better. 

Hart was a key figure in the Knicks’ Game 1 victory, not only scoring 17 points along with 10 rebounds, but he hit the game’s biggest shot, a 3-pointer with 1:47 left that gave the Knicks the lead for good in his playoff debut.

Moments earlier, Hart had fallen hard while going for a rebound, which is where he sustained the injury. 

Hart has emerged as an essential part of the Knicks’ bench after coming over in a trade deadline deal with the Trail Blazers.

The Knicks have won 18 of 26 games with Hart, and are 2-0 against the Cavaliers.

“He was the X-factor for them,” Donovan Mitchell said, referring to the series opener. “At the end of the day he’s a guy that, ever since that trade happened, he’s been nothing but gold for them.”