That's how most injuries seem to happen. It confuses me so much, the lack of reporting on injured players.
It really is amazing to me. Especially coming from the American point of view, where every single injury is listed and dissected to death. Hell, every team releases injury reports well in advance, there's constant communication regarding it with fans and the leagues. Here, it always seems to be a total surprise when a player is injured or returns. If it wasn't for physioroom in the EPL at least, we'd hardly ever know how when players were due to return or if a player was even actually injured. Real shortcoming from the fans point of view at least.
Glad I'm not the only one whose frustrated by it. Like today, I turn on Man City/Liverpool and Tevez wasn't in because he was hurt, and I had no clue until that point.