Furia vs Chaos
I only know Furia and they play fine now and then. But Chaos does have Steel who tends to play well, so it might be a tie if its posible.
Complexity vs Gen.G
Gen.G have the most known players compared to Complexity, but Complexity have someone like Konfig.
Its gonna be a tight game on paper :D
Cloud9 vs Riot Squad
Cloud9, how the mighty have fallen, they new team is the old ATK team, they dont have any good records.
Riot Squad I haven't heard of before now, but they do have ptr and FNS, which is not bad players.
I would say that Riot Squad should win.
MIBR vs Intz
Holy shit, Mibr has falling down a lot, its even still good players and 3 of the core players who have won a major with this team, like wtf happend.
Intz is anotjer Brazilian team which I haven't seen much from. But they have Boltz.
.....
I had totally forgot about Katowice, I have only been looking at when the Europes has to play xD