The Celtics have a huge game ahead of them against the Timberwolves and it looks like they will be getting closer to full strength. Al Horford was upgraded to questionable based on C’s injury report due to a non-COVID illness. Kristaps Porzingis is still out due to rehabilitation surgery. The C’s face the Wolves at TD Garden on Sunday at 3:30 p.m.

Horford missed the Celtics’ win over the Wizards on Friday after being added to the injury report late. But the fact that Horford is questionable is a good sign considering he was the Celtics starter and Porzingis missed the first few months of the season.

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The reigning champion C’s had an imperfect performance in Washington, but all that mattered is that they got the win and moved to 13-3 on the season. The Timberwolves come in with an 8-7 record, having struggled a bit to open the season. But Minnesota made the West Finals last season in a nod to its talent level.

The Wolves will be without guard Mike Conley due to a left toe sprain as he hasn’t played since Nov. 17. Minnesota made a big trade to start the season when it acquired Julius Randle and Donte DiVincenzo for longtime big man Karl-Anthony Cities.

But the Wolves have been rocky, especially in recent games. They dropped a game to the Raptors on the road last time out, leading to Randle saying after the game that it was a “low point” for the team. So the Wolves will look to bounce back on Sunday, although playing the Celtics won’t make it any easier.

The Celtics are currently on a four-game winning streak. During their rise, the Wolves had one of the best defenses in the league. But this season they currently sit 13th in the defensive rankings as they look to find their footing. They still have a top-10 net rating, but the Wolves will look to clean up some things going forward.