Several things, some worrisome, others more conjonctural :
- Preseason after an intense summer with the NT, probably lots of hard training going on as well. So there is a formal of mental fatigue / difficulty to get properly motivated. Once the real season starts, motivation will be there, bad performances will motivate him even more, etc.
- Being better known and more scouted. The NBA regular season is an endless sprint, you play every 2 days, you just don't stop. Staff scout players, but it's isn't the same as the players on the team having the mental time to process who they are playing against and how to attack them. This job was done during the offseason, players know how to minimize Gobert's strengths a lot better. he will have to adapt too.
- Poorer team defense. Defense requires abilities (size being an important one) and motivation. in preseason the motivation is lacking and the ability is lower because different rotations are being tried out. Gobert as the ultime defender, ie the key one but also the "beneficiary" of others work in terms of stats (rim protection, blocks, def rebounding, etc) suffers from it.
- The PG situation plays a role. Exum is really a freaking awesome defender, he could be a tall Gary Payton in terms of defense. Having Burke as the "initial" defender in the set degrades the defense so much, it is'nt funny. this hurts team defense and Gobert.
We will see. I am confident Gobert will have a solid season, but it might not be the monstruosity we dreamt of. He might be more in the 10/12/2,5 mold, which is already darn solid, rather than the otherworldly 10/14/3,5 we came to dream about...