That is normal. The GS gets worse in order to make it harder for teams to "buy" their way into a championship. In my opinion it's even not enough ... it should take more than just 1-2 weeks to get a player working with the team chemistry .. but that's another topic. So nothing unusual there - if you give your player good minutes, he'll be back at GS 7-8 next week, I'm pretty sure ...
Winner: 1x Consolation Tournament (U21), 2x Goldene Ananas, 1x Goldene Himbeere, 2x Goldener Erdapfel, 3x Bronze Medal (U21)