Maybe they cant play better (usually) but its many players that still holds a high level after 30. Gioli, Ravva as u mention at 35-37, Turlea is 37 and still very good. Estes was maybe the best OH in Russian SL last season at 37 yrs. Sokolova is 35 and still one of the best OHs. Piccinini is 33, Del Core 32, Costagrande is 32 and was MVP in World Cup in november. Aguero is 35 and was fantastic couple of yrs. ago. Natasa Osmokrovic was one of the best in the world 1-2 yrs. ago at around 35. Glinka is 34 and still one of the best OPPs in the world IMO. Haneef had a really good season last one and is 33 yrs. old, Gamova is 32, we can go on and on...
read more carefully Anton, I was talking about MBs Of course there are good players even at late their ages. But if we are talking about a general trend, MBs are underperforming after their 31-32 from my point of view. I can make the same generalization for setters and liberos as vice versa