Injured players getting worse FT rating than when subbed

Hi there,

I had a problem at my last match with patch 9.2.0 installed. In the 15th minute my player got an injury and had to sub him, at that time he had a decent 6.4 for rating. But then at full time (I won the match 2-1, all of my players got 7+ rating) he got a final rating of 5.9!!! What happened there? He missed some CCC at the ambulance? Did anyone have the same experience?

Sorry, I missed the screenshot at full time speech, so I could just give you the FT ratings.