Newcastle United boss Eddie Howe admits they have more injury concerns after victory over Fulham.
Fabian Schar and Joelinton are the latest to be forced to the sidelines.
Howe said: "I think Fabby's is a glute problem, I don't think it's a hamstring, and Joey's possibly might be a hamstring.
Asked sbout an internal investigation, Howe said: "I don't think it takes much of an internal investigation. The problem we've had is because we've had injuries to start with.
"The early ones we picked up, it meant our squad has just not managed the games. It's been impossible to, we've had to pick the same players continually and eventually those players with the load that they're playing under will break, so I think we've just been a victim of circumstance.
"Don't get me wrong, there have been mistakes made and there will always be mistakes made medically because it's that kind of profession. You're not going to get every assessment right.
"A lot of the time, you're in the hands of the specialist. But the weight of games we've had and it's still unrelenting for us we just haven't recovered properly."