My short overview of the groups @DH 2012 Summer!
Sorry for language mistakes! :)

Group A: Virtus.pro, ESC Gaming, WinFakt, SK Gaming
Group B: Natus Vincere, Fnatic, Moscow Five, zNation

Group A OVERVIEW:
Results:

WinFakt vs Virtus.pro; de_tuscan, 15:15
ESC Gaming vs. SK-Gaming; de_train, 16:12
SK-Gaming vs WinFakt; de_dust2, 15:15
Virtus.pro vs ESC Gaming; de_inferno, 16:4
ESC Gaming vs. WinFakt; de_tuscan, 16:11
Virtus.pro vs SK-Gaming; de_train, 16:14

WinFakt vs Virtus.pro; de_tuscan, 15:15

The match started well for the first half the score was 9:6 in favor WinFakt, but in the second half Virtus.pro players managed to recover
and reverse the result. Virtus.pro team led by Aleksey "LeX" Kolesnikov with the end rate 1.34. The end result of this match was 15:15.

ESC Gaming vs. SK-Gaming; de_train, 16:12

ESC Gaming got the first half without a more severe problem, a team led by the late great mood Filip "Neo" Kubski one of the best players of today. The result for the first Halfa 10:5 ESC Gaming. In the second half the team SK-Gaming is a bit lively, but to them it was not enough to reverse the result, SK-Gaming team was led by Marcus 'Delpan' Larsson with a rate of 1.27 (+8). The other half got the team SK-Gaming but they were not enough, because the result in the first half was 10-5 for the ESC Gaming. Final result of this match was 16:12 for the ESC!

SK-Gaming vs WinFakt; de_dust2, 15:15

Perhaps one of the most interesting matches Group A was the SK-Gaming vs WinFakt. The match started in favor of SK-Gaming's thanks to Johan "face" Klasson-in which was the top Frager in this match and if at the end of the match ended with a rate of 1.11 (+3). The result of the first Halfa was 9:6 for SK-Gaming. The second half started the fire on one side and on the other hand, those in the second half WinFakt led by Niklas "Niko" Johansson with the end rate 1.12 (+3). The second half belonged to the team WinFakt, which unfortunately was not enough, because the total score was 15:15.

Virtus.pro vs ESC Gaming; de_inferno, 16:4

The result of this match fans counter strike was surprised, in fact Virtus.pro team managed to win one of the strongest teams of today, "ESC Gaming", and to score 16:4. The first half belonged to the team Virtus.pro with a score of 12-3, the team was led by Virtus.pro Aleksey "LeX" Kolesnikov-mail that showed its maximum, and at the end of the match got very high marks with 1.86 +15 K/D, also played a great game and Emil 'Kucher' Akhundov, he got a score 1:52 which is not really lose! Final result of this match was 16:4 in favor of Virtus.pro.

ESC Gaming vs. WinFakt; de_tuscan, 16:11

ESC has played a very good game, were led by Jaroslaw "pasha" Jarzabkowski by their AWP skills brought benefits to his team.
The first half was very interesting and finished with a score of 10-5 for the ESC Gaming. The second half started very uncertain (End of Halfa 6:6) but the final result of this match was 16:11 for the ESC gaming. MotM was Jaroslaw "pasha" Jarzabkowski with rateing 1:32 and +9 K/D.

Virtus.pro vs SK-Gaming, de_train, 16:14

Although the favorite of this match was the SK-gaming, team Virtus.pro again surprised fans counter strike, this time won the VP team SK-Gaming and thus proved able to cope with the strongest teams. The first half of Virtus.pro 10:5 (VP), second half 9-6 for SK-Gaming. Final result: 16:14 to Virtus.pro.
best player of the match was Patrik "f0rest" Lindberg with a rate of 1.67, and +17 K / D difference. The winning team was headed by Dmitry "hooch" Bogdanov from the 1:20 mark and +5 K/D difference.

Group B OVERVIEW:
Results:

Moscow5 vs zNation, de_inferno, 16:2
Fnatic vs Natus Vincere; de_mirage; 16:9
Natus Vincere vs zNation; de_dust2, 16:7
Fnatic vs Moscow Five; de_nuke, 16:3
Natus Vincere vs Moscow5; de_tuscan, 16:12
Fnatic vs zNation; de_train, 16:2

Moscow 5 vs zNation, de_inferno, 16:2

Very easy match for "favorite" Moscow5 against zNation. M5 won the first half 13:2 and thus greatly facilitate the game in the second half. The result was another Halfa 3:0 and 16:2 for the end result of Moscow Five. MotM Mihail "dosia" Stolyarov with rate 1.88 and +13 K/D difference.

Fnatic vs Natus Vincere; de_mirage; 16:9

Certainly one of the most interesting matches of group B was the match between the Swedish team Fnatic against Ukraine's "top" team Natus Vincere known as the `Vi.
The guys from fnatic knew that the team you `strong, and they will have to give my best in the game. The first half belonged to the team fnatic 9:6, the second half also went to the team fnatic 7:3. Final score 16:9, player statistics, match the hltv was Michael 'Friis' Jørgensen with rate 1:44 and +10 K / D difference, and if the top Frager Fnatic was Rasmus "Gux" Ståhl to +11 K/D difference.

Natus Vincere vs zNation, de_dust2, 16:7

Not so tough match for the team Natus Vincere who was also a favorite match.
First half: 11:4, 'For You led Yegor "markeloff" Markelov with a rate of 1.73 and +16 K/D difference. The second half belonged to the team Na`Vi 5:3, the final result of the match was 16:7.

Fnatic vs Moscow Five; de_nuke, 16:3

Moscow Five team as he had not practiced de_nuke, or simply fnatic team played superbly.
First half: 12:3 for fnatic, led by the great Richard "Xizt" Landström.
Second half: Easy job for Fnatic (4:0) and the final score 16:3.
Fnatic Team rateing was 1:40 while the team from Moscow Five was 0.49.

Natus Vincere Moscow vs Moscow Five; de_tuscan, 16:12

An interesting game with lots of errors of both teams.
First half: 8-7 in favor of Moscow-Five, who started the match very well, led by the Roman "ROMJkE" Makarov.
The team Navi and the team immediately revived led by the brilliant Arseny "ceh9" Trynozhenko as top Frager, his score was 1.37, +10 K/D differences. The match marked Sergey "Fox" Stolyarov, who did the -5. Revulsion, and many eco rounds of Moscow 5 and caused the loss of important rounds of Moscow 5 and thus eventually Natus V. victory with a score of 16:12.

Fnatic vs zNation; de_train, 16:2

The expected favorite matches Fnatic this time we did not disappoint. zNation beating with a score of 16:2.
The main player of fnatic was Michael "Friis" Jørgensen with high rate 2:34 and +21 K/D difference.