Give the kid a break. This has been his first year defending points and he has clearly felt the pressure. It takes time to get used to these situations and I'm sure he will bounce back next year. He's not perfect but he's nowhere near as bad as people on here make out.
At the moment, he may not have the problem of defending many points next year. And when his ranking slides, he'll play the seeds instead of the other way round. Things are not going to get any easier for him.