Mentioned his temperament a fair few times in the past and I think it's absolutely an achilles heel for him that has been absolutely exploited by Sterling's camp.
Yan was like the terminator before he faced emotional adversity; simply walking everyone down and seemingly being unflappable, but the moment the verbals and smack talk got under his skin with his last three opponents, he's absolutely lost his composure and gone in there overamped and underprepared in the sense that he only thinks about the hurt he wants to put on them and no strategy or readiness for what's coming back at him. Bit like Aldo flying out, triggered by McGregor and getting sparked out in embarrassing fashion for it, but on a slower, systematic time frame.
By now, Yan comes across as unintelligent, linear and self-absorbed because he doesn't adjust or even try to make strategic countermeasures. It's like he sees red and then loses his way.
I don't think it's an issue with ability or technical proficiency, but rather his mental aspects and ego. If the guy took time out and got some zen, I'd wager he'd make a far better account of himself than he has been doing - he simply cannot afford to have such triggerable ins vs opponents who are just as good as him; they are easy exploits that are being pounced upon by more cunning and savvy fighters.
