AFAIK, this is the first LAN to do a ban ban pick pick for the maps. Here's a quote from the rules:

Team that is in the upper part of the bracket is called A Team that is in the lower part of the bracket is called B Best of three match: – Team A will drop two maps. – Team B will drop two maps. – Team A will drop one map. – Team B will drop one map. – Team B will pick 1 map into the pool. – Team A will pick 1 map into the pool. – Team A will drop one map. – Team B will drop one map. – Team A will drop one map. – Team B will drop one map. – The last remaining map will be the first map to be played in the series. – Team A will pick their starting side on map one. – The loser of map one will select map two from the map pool. The winner of map one will select their starting side. – If the match is tied 1-1, the remaining map will be played. The winner of map two will select their starting side. Best of five match: – Team A will drop two maps. – Team B will drop two maps. – Team A will pick 1 map into the pool. – Team B will pick 1 map into the pool. – Team B will drop one map. – Team A will drop one map. – Team A will pick 1 map into the pool. – Team B will pick 1 map into the pool. – Team A will drop one map. – Team B will drop one map. – The last remaining map will be the first map to be played in the series. – Team A will pick their starting side on map one. – The loser of map one will select map two from the remaining 4 maps. The winner of map one will select their starting side. – This process repeats after each game until one team has won three maps out of the five maps.