When a star player is ruled out, betting odds can move within seconds, and AI systems that scan news, social media, and team announcements now react faster than any human possibly could.

The mechanism is straightforward: a key player's absence changes the team's true win probability, and bookmakers and traders adjust odds to reflect the new reality, often in several waves as more detail emerges.

The first move is usually the sharpest, driven by automated systems, while later moves reflect human judgement about the replacement player, the matchup, and the team's depth.

For ordinary bettors, the edge is rarely in being first to the news, but in judging whether the market has overreacted or underreacted once the dust settles.