Tonight, the Golden State Warriors’ offense completely stalled as they lost 104-129 to the Denver Nuggets. Without Stephen Curry, the Nuggets avenged their opening night loss, with Nikola Jokic and Jamal Murray carving up the defense. However, eyes shifted to something far subtler: Jimmy Butler didn’t seem to be moving right. His burst was reduced, and the forward looked measured, almost guarded.

Midway through the game, color commentator Jim Jackson voiced what many people were starting to notice. “I’ve been watching Jimmy Butler run,” he said, voicing out Dub Nation’s fears. “And I know he’s coming off that back injury, and it may be a little serious. He’s not as aggressive defensively, and when he’s running, he’s running, but not really to get to where they’re opening, where he may have to explode and get some contact.”

The remark landed quietly, with the broadcast quickly moving onto Jamal Murray’s shooting, but the observation carried weight. Jackson is a former NBA veteran, and been through locker rooms and on-court situations that give his take credibility, and Butler’s body language said plenty.

This is a developing story.