Dolgo is out to Berdych in straights. He finally ran out of steam and Berdych is always going to be very tough for him.
Raonic just lost his match against Nadal too. From Raonic's perspective, it's highly mental against the likes of Federer, Nole, Nadal etc. He became very overwhelmed after winning the first set and folded quickly in the 2nd set. Though was looking better in the 3rd but wasn't good enough against Nadal.
Hope he learns from it and next time takes it to another level. It's high time he starts winning against these players. The young ones must come forward and make it their own.