The City group calculations give me a serious headache. The rules are, if two teams have the same points, you refer to the H2H matches between them unless the H2H is exactly the same then you go for the general GD. But if 3 teams are tied with the same points, you refer to the GD in the matches played between the three teams only. Now, all of City, Roma and CSKA have 5 points, that means: - If Roma get a win, they go through regardless of the other result. - If City win in Rome, they go through unless CSKA beat Bayern in which case the Russians go through because of the H2H with City. - Similarly, if CSKA win they go through unless Roma win and qualify on H2H. - Now, if City get a 2-2 or higher score draw they qualify on away goals in the H2H against Roma as long as Bayern beat CSKA; in this scenario, if CSKA get a draw against Bayern, all three teams would be on 6 points and they send Roma through as the team with the best GD in the matches between them. If CSKA win, they go through on points. - If City get a 1-1 draw, they go through on general GD as long as Bayern beat CSKA. Again, if CSKA get a draw against Bayern in this case, all three teams would be on 6 points and they send Roma through as the team with the best GD in the matches between them. If CSKA win, they go through on points. Pretty simple, eh?