A1 means by Rank 1 in Group A ; B3 means by Rank 3 in Group B followed by Rank 2,3,4 and it's apply to other groups as well.

MT11R2, Knock-Out system
A vs E
B vs F
C vs G
D vs H

Group I
(A1)YaoSS vs--- (E3)Fiction
(A2)Spinford vs--(E4)Wilsonouh0630
(A3)VictoKira vs-(E1)song
(A4)Icy Fox vs--(E2)Lkhong96

Group II
(B1)Fx vs-------(F3)Mr.HaM
(B2)GigaByte vs-(F4)FayGor
(B3)Xav vs------(F1)Mcpolabear
(B4)Stemza vs---(F2)DiGa Motions

Group III
(C1)ellusion67 vs-(G3)Jz
(C2)IcE vs-------(G4)iSpin
(C3)Baby vs------(G1)lucky幸运
(C4)yao vs-------(G2) DavidYH

Group IV
(D1)Alvaris vs------(H3)AniMx
(D2)MAxz197 vs---(H4)herng77
(D3)XenoJs vs-----(H1)WKsamurai
(D4)Shadow517 vs-(H2)Sean4896
What to present in R2 video?
Just the words " ROUND 2 "

Important tournament dates
Deadlines are subject to changes.
22/10 - Results of Round 1 revealed & What to show in Round 2 Video?
..
28/10 - Deadline to submit Round 2 videos.
29/10 - Judging
30/10 - Judging
31/10 - Judging
1/11 - Judging
2/11 - Results of Round 2 revealed & What to show in Round 3 Video?


Source: http://mypsc.freeforums.org/round-2-information-t1632.html