Tournament difficulty
British Parliamentary tournaments ranked by the empirical strength of the field that showed up. View our methodology here.
Updated 11 hours ago
May 2024 to May 2026
TournamentStrength
#1
Imperial IV 2025
2025-07 · 33 teams
1.80
#2
Bulgaria WUDC 2026
2025-12 · 337 teams
1.32
#3
Glasgow Summer Cup 2024
2024-07 · 69 teams
1.30
#4
Cambridge IV 2024
2024-11 · 86 teams
1.29
#5
pre-WUDC Vienna Online Open
2024-12 · 133 teams
1.29
#6
Princeton IV 2024
2024-09 · 142 teams
1.29
#7
UCLA IV 2025
2025-09 · 97 teams
1.21
#8
Princeton IV 2025
2025-09 · 138 teams
1.16
#9
Hart House Winter Open 2026
2026-01 · 52 teams
1.14
#10
Panama WUDC 2025
2024-12 · 228 teams
1.06
#11
GME Pra-KDMI 2025
2025-04 · 28 teams
0.99
#12
Oxford IV 2024
2024-11 · 115 teams
0.98
#13
Vienna Pre-EUDC 2024
2024-06 · 115 teams
0.97
#14
Diliman IV 2024
2024-12 · 66 teams
0.92
#15
Sofia Online Open Part 2
2024-05 · 134 teams
0.85
#16
IV SULBR
2025-02 · 36 teams
0.80
#17
Cambridge IV 2025
2025-11 · 93 teams
0.77
#18
SMVIT Parliamentary Debate 3.0 pre-WUDC
2025-12 · 63 teams
0.74
#19
NAUDC 2026
2026-03 · 81 teams
0.73
#20
MKDS Open 2026
2026-03 · 26 teams
0.72
#21
North American University Debating Championships 2025
2025-03 · 114 teams
0.71
#22
Glasgow EUDC 2024
2024-07 · 185 teams
0.69
#23
Delhi Debate 2025
2025-08 · 48 teams
0.60
#24
St Andrews Pre-EUDC Pt.1
2026-04 · 47 teams
0.54
#25
Oxford IV 2025
2025-11 · 134 teams
0.50
#26
Pre-WUDC Vienna Online Open 2025
2025-12 · 164 teams
0.47
#27
DTU Pre-Worlds 2025
2025-11 · 58 teams
0.42
#28
Drexel Pre-WUDC 2025
2025-08 · 51 teams
0.29
#29
Durham IV 2024
2024-11 · 45 teams
0.29
#30
RCL PD 2025
2025-12 · 64 teams
0.21
#31
Penn Pre-WUDC 2024
2024-11 · 88 teams
0.19
#32
Copenhagen EUDC 2025
2025-08 · 183 teams
0.15
#33
2nd Charcha British Parliamentary Debate 2026
2026-03 · 46 teams
0.12
#34
Budapest Pre-EUDC Fundraiser 2025
2025-06 · 33 teams
0.12
#35
IIT Madras Parliamentary Debate 2026
2026-02 · 51 teams
0.11
#36
Norwich 26
2026-03 · 25 teams
0.11
#37
Queens Holiday Open 2025
2025-12 · 92 teams
0.08
#38
Uhuru Worlds 2025
2025-06 · 496 teams
0.07
#39
Durham IV 2025
2025-11 · 48 teams
0.06
#40
People Speak 2026
2026-01 · 84 teams
0.03
#41
Uhuru Worlds 2024
2024-06 · 484 teams
0.01
#42
GO 2026
2026-03 · 24 teams
-0.02
#43
SEF ITB Pro Ams 2026
2026-03 · 77 teams
-0.02
#44
Drexel Debate Open 2024
2024-06 · 48 teams
-0.04
#45
RCL PD 2024
2024-08 · 61 teams
-0.05
#46
Roberto Farina Solidário
2025-01 · 35 teams
-0.07
#47
Xth NUALS Parliamentary Debate 2026
2026-03 · 41 teams
-0.13
#48
Delhi Debate 2024
2024-07 · 88 teams
-0.14
#49
Berkeley IV 2024
2024-06 · 68 teams
-0.15
#50
University of Southern California IV 2025
2025-02 · 56 teams
-0.20
#51
Hart House IV 2024
2024-10 · 102 teams
-0.20
#52
NUDC 2025
2025-10 · 97 teams
-0.22
#53
Hart House Autumn Split 2025
2025-11 · 64 teams
-0.22
#54
IITKGP PD 2026
2026-02 · 65 teams
-0.23
#55
Winter Debate Symposium 2025
2025-01 · 69 teams
-0.24
#56
Amsterdam Open 2025
2025-12 · 75 teams
-0.27
#57
Yale IV 2024
2024-11 · 140 teams
-0.28
#58
Gurgaon Online Open 2026
2026-02 · 33 teams
-0.30
#59
14th NALSAR Debating Championship 2024
2024-09 · 92 teams
-0.32
#60
Motilal Nehru British Parliamentary Debate 2025
2025-06 · 92 teams
-0.32
#61
NUDC 2024
2024-05 · 114 teams
-0.32
#62
Curtin Debate Open 2025
2025-11 · 45 teams
-0.33
#63
Indo-Pacific Pro-AM 2024
2024-07 · 44 teams
-0.35
#64
East Malaysia Open 2024
2024-08 · 98 teams
-0.38
#65
NEO Universitas Riau 2025
2025-04 · 17 teams
-0.40
#66
15th NALSAR Debating Championship 2025
2025-09 · 133 teams
-0.44
#67
Ridge '25
2025-05 · 39 teams
-0.45
#68
Filibuster Parliamentary Debate 2026
2026-04 · 58 teams
-0.45
#69
Seattle IV Online Pre-WUDC 2025
2025-12 · 46 teams
-0.45
#70
Padjajaran Debate Open 2025
2025-11 · 28 teams
-0.52
#71
passover open 2026
2026-03 · 20 teams
-0.52
#72
Krabi ABP 2024
2024-10 · 80 teams
-0.54
#73
YODL Champs April 2025
2025-03 · 64 teams
-0.64
#74
Indian Debate Open 2024
2024-07 · 39 teams
-0.65
#75
SLDC 2025
2025-11 · 37 teams
-0.68
#76
9th VUBP
2026-02 · 40 teams
-0.79
#77
Tournament
2026-02 · 48 teams
-0.81
#78
NMIMS IV 2026
2026-03 · 40 teams
-0.83
#79
SLS PD 2026
2026-02 · 55 teams
-0.84
#80
Challenger
2025-07 · 58 teams
-0.87
#81
17th IIT Bombay Debate
2024-10 · 121 teams
-0.89
#82
II TND 25 Brasil
2025-11 · 60 teams
-0.91
#83
Summer Debate Symposium 2025
2025-07 · 78 teams
-1.26
#84
USC IV 2026
2026-04 · 37 teams
-1.27
#85
IITK PD'26
2026-03 · 37 teams
-1.35
#86
FAST IV 2025
2025-04 · 36 teams
-1.50
#87
VNDC 2025
2025-10 · 69 teams
-1.64
#88
Seattle Classic 2025
2025-03 · 21 teams
-1.65
#89
NUDC Untan 2026
2026-04 · 20 teams
-1.78
#90
Seattle IV 2024 YODL
2024-06 · 59 teams
-1.91
#91
Sheffield 26
2026-05 · 16 teams
-2.41
#92
QMUL Open 2026
2026-02 · 51 teams
-2.57
Round robins
Round robins are curated invitationals — typically 16 of the world's best teams playing every other team across the prelims with no power-pairing. The bubble-path metric used in the main ranking doesn't apply (opponent strength is uniform across the field), so they're shown here separately. By raw field strength these are the most competitive tabs on the calendar to break at.
#1
HWS Round Robin 2025
2025-04 · 16 teams
4.65
#2
ILNU Round Robin 2026
2026-04 · 16 teams
2.06