This page shows records in all Group Stages except Champions League 2nd round GS in seasons 99/00 - 02/03, because seeding at this stage was not based only on club coefficients, but also on the positions in 1st round GS. Seeded teams in GS have been those seeded in first two Pots (+ Pot 3 in case of UEFA Cup). Clubs, which have finished on a 3rd position in CL GS are considered as eliminated team.
Clubs
- Best seeded advancing ratio
100,0 % ▬
Real Madrid CF [20-0] - Worst seeded advancing ratio
33,33 % ▬
Club Brugge KV [3-6]; 
Panathinaikos FC [3-6]; 
FC København [2-4]; 
FCSB [2-4]; 
FC Spartak Moskva [2-4]; PAOK FC [2-4] (among clubs with 5+ played groups)
38,46 % ▬
SL Benfica [5-8] (among clubs with 10+ played groups) - Best unseeded advancing ratio
83,33 % ▬
Bayer 04 Leverkusen [5-1] (among clubs with 5+ played groups)
60,00 % ▬
AC Sparta Praha [6-4] (among clubs with 10+ played groups) - Worst unseeded advancing ratio
0,00 % ▬ PFC CSKA Moskva [0-7] (among all clubs)
8,33 % ▬
Rosenborg BK [1-11] (among clubs with 10+ played groups)
- Most seeded advances
20 ▬ Real Madrid CF [20-0] - Most seeded eliminations
8 ▬ SL Benfica [5-8] - Most unseeded advances
6 ▬ AC Sparta Praha [6-4] - Most unseeded eliminations
13 ▬ Olympiacos FC [3-13]
Associations
- Best seeded advancing ratio
88,30 % ▬
England [83-11] - Worst seeded advancing ratio
28,57 % ▬ Romania [2-5] (among associations with 5+ played groups)
30,00 % ▬ Czech Republic [3-7] (among associations with 10+ played groups) - Best unseeded advancing ratio
66,67 % ▬ England [14-7] - Worst unseeded advancing ratio
0,00 % ▬
Azerbaijan [0-8] (among all associations)
6,67 % ▬
Croatia [1-14] (among associations with 10+ played groups)
- Most seeded advances
94 ▬ Spain [94-13] - Most seeded eliminations
19 ▬
Netherlands [22-19] - Most unseeded advances
25 ▬ Germany [25-20] - Most unseeded eliminations
28 ▬
France [14-28]
Biggest surprises
- Smallest advanced coefficient
3,450 ▬
PFC Ludogorets 1945 (smallest coefficient ever and in EL/UC - 13/14)
11,300 ▬ AS Monaco FC (smallest coefficient in CL - 14/15) - Biggest eliminated coefficient
151,157 ▬ Manchester United FC (biggest coefficient ever and in CL - 11/12)
102,837 ▬ Sevilla FC (biggest coefficient in EL/UC - 08/09)
