The key here is that the 63 PP100 of the visiting team's PGs is hugely irrelevant, since only 4 shots have been taken there. Same for the home team's SF and C (2 and 5 shots, respectively).
If you go to the training page, select passing and then select "team" your center will get passing training. If you choose not to train this way, or by playing your center at either PG or Sg, which is also an option, then you choose not to. Do not reply with some blather about that not being possible or feasible or efficient. I don't care. You CAN train passing for your centers. I have and do.This player (3201582), a backup on my team, averages 5 assists in 22 minutes per game.
The more near you are to the basket , the better opportunity you have . So It should be easier for inside player .