Display MoreDiefenbach is an 23-years-old MB, 196cm, playing for Langhenkel Volley, in Dutch League.
http://www.elteevolley.com/player/jasper-diefenbach
I can imagine you don't know him
About Vlam: he has no club at the moment, so I think that could be a reason why he isn't in the roster.
About Overbeeke: He played some nice games with his club Lennik, but I presume Benne thinks he is too unexperienced yet, for such important tournament.
Yes, I know Vlam is without a club at the moment, and with Kooistra and Bontje there is hardly any place for anyone else, but he made some good games in the WCCH in Qatar, so could've been given a chance maybe.. Anyway, when the two starters in the middle are known, the rest is not that important, I guess.. About Overbeeke, well, it's true he lacks some experience, but to me even he and Krolis are way better options than van Dijk
Too bad for Kooy!