Celtics upgraded Al Horford to questionable for Game 2, according to Adrian Wojnarowski of ESPN.

Celtics upgraded Al Horford to questionable for Game 2.

— Adrian Wojnarowski (@wojespn) May 19, 2022

Wojnarowski later added that the Celtics have continued testing Al Horford with the hope that he can exit health and safety protocols prior to Game 2.

The Celtics have continued testing Al Horford with the hope that he can exit health and safety protocols prior to Game 2, sources said. https://t.co/qiKZDY67hH

— Adrian Wojnarowski (@wojespn) May 19, 2022

Update: Shams Charania of The Athletic later reported that Horford will play in Game 2 vs. Miami tonight.

Celtics‘ Al Horford will play in Game 2 vs. Miami tonight.

— Shams Charania (@ShamsCharania) May 19, 2022

ANALYSIS: It appears Horford's tests came back negative. The real question is how up to speed Horford will be when he comes back. Boston will need him to go up against Bam Adebayo so the healthier he is the better.