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THE EUROPEAN ARCHIVE

Success Index

How the two Success Index calculations work.

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THE ARCHIVE’S DISTINCTIVE MEASURE

Look beyond wins and defeats.

The Success Index (SI) was developed for this website. One formula assesses Romanian clubs’ European campaigns. The other assesses their results against opponent teams and countries. The weights and expectations were chosen for this project. Neither score is an official UEFA ranking.

Higher scores always mean greater Romanian success. A country or opponent score describes Romanian clubs’ success against that opposition, rather than the opposition’s own success. The two scores answer different questions, so they should not be compared directly.

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ROMANIAN CLUB MODEL

The club’s own record

SI = 0.60 Pv + 0.20 P + 0.15 Pct + 0.05 GB

ComponentMeaningWeight
PvExpectation-adjusted progression60%
PMatch performance20%
PctRegular points plus stage bonuses15%
GBGoal Balance5%

Each club’s profile shows its SI, ranking, component values and competition-entry calculations.

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OPPONENT & COUNTRY MODEL

The Romanian record against them

SI = 0.40 KP + 0.20 MS + 0.40 GO

ComponentMeaningWeight
KPRomanian knockout qualification rate40%
MSRomanian match success20%
GORomanian group / unique group qualification success40%

This formula applies when all three components are available. Missing components are omitted and the remaining weights are redistributed proportionally.

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Which competitions count?

Competitions eligible for SI: European Cup / Champions League · UEFA Cup / Europa League · Conference League · UEFA Super Cup · Cup Winners’ Cup · Intercontinental Cup · Inter-Cities Fairs Cup. All Intertoto Cup editions, the Balkans Cup and the Mitropa Cup are excluded.

Qualifying rounds and main stages are included. Each score panel lists the specific competitions contributing to that score. Eligibility differs for unfinished entries and outcomes, as explained below.

Romanian clubs: complete method and worked examples

1. Progression · Pv · 60%

Calculate the progression score for each eligible competition entry, then take their arithmetic mean. A competition entry is one club in one competition in one season. A transfer creates a separate entry; each group phase counts as one stage.

InputDefinition
CalSuccessful stages passed. Winning a final counts as passing it.
TDisStages available from entry through the final, including stages not reached.
TExpSuccessful stages needed from entry to reach or pass the expected stage.
PvEProgression score for one competition entry.

Before or at expectation: PvE = 100 × Cal / TExp

Beyond expectation: PvE = 100 + 10 × (Cal − TExp)

Pv = sum of eligible PvE values / number of eligible entries

Reaching an expected stage and passing an expected group are different: a club entering a group directly has not yet passed it. The expectation depends on the competition and season, and TExp counts the steps from the actual entry point.

Expectation rules by competition, era and entry point
CompetitionSeasonsExpectation
European Cup / Champions League1956/57–1990/91Reach quarter-finals
European Cup / Champions League1991/92–1993/94Reach group
European Cup / Champions League1994/95–1998/99Reach quarter-finals
Champions League1999/00–2002/03Reach second group
Champions League2003/04 onwardsPass group / unique group
UEFA Cup / Europa League1971/72–1998/99Reach quarter-finals
UEFA Cup1999/00–2003/04Reach Round of 16
UEFA Cup / Europa League2004/05 onwardsPass group / unique group
Conference League2021/22 onwardsPass group / unique group
Cup Winners’ Cup1961/62–1998/99Reach quarter-finals
Inter-Cities Fairs Cup1962/63–1970/71Reach quarter-finals
European Super Cup / Intercontinental CupAll editionsFinal · special rule

Entry point and special cases

When a club enters before the expectation has been met, use the expectation formula. If a club enters at or beyond a stage it was expected to reach, its target becomes winning the final: PvE = 100 × Cal / TDis, without the 10-point progression bonuses. Transfers create separate entries, with their own entry point.

In the European Super Cup and Intercontinental Cup, a final defeat scores 100 and a final win scores 110. These final-only competitions are an explicit exception to the entry-point rule.

For a unique group followed by knockout play-offs, advancing to those play-offs meets the group expectation and scores 100. Reaching the Round of 16 scores 110, either by winning the play-off or by finishing in the top eight and advancing directly. A top-eight finish earns the Round of 16 bonus even though the play-off was bypassed.

Example: TExp = 2

Passing 0, 1, 2, 3, 4 or 5 stages gives PvE = 0, 50, 100, 110, 120 or 130 respectively. For a direct entry at an already reached expectation with TDis = 5, one successful stage gives PvE = 20.

Final-only example: Steaua’s 1986 Super Cup win gives 110; its 1986 Intercontinental Cup final defeat gives 100.

2. Match performance · P · 20%

P = 100 × (wins + 0.5 × draws) / matches

Pool the results from all eligible completed entries. This component gives the same match-result value to qualifying and main-stage matches. Extra-time scores count; a shoot-out does not turn a drawn match into a match victory.

3. Points including bonuses · Pct · 15%

Pct = 100 × (PEt + PB) / Pd

InputWhat counts
PEtTotal regular match points earned. Qualifying wins / draws earn 1 / 0.5. Main-stage wins / draws earn 2 / 1.
PBOne bonus point per eligible stage played, regardless of its match count.
PdMaximum regular points available from stages actually played. Excludes bonus points and stages never played.

Preliminary rounds, qualifying rounds and qualifying play-offs use 1 point per win and 0.5 per draw. Main-stage matches, including knockout phase play-offs after groups, use 2 points per win and 1 per draw.

Award one bonus for each group phase, each eligible post-group knockout round, quarter-final, semi-final and final played. The Round of 32 and Round of 16 earn bonuses only in group-based formats. As an exception in the Inter-Cities Fairs Cup, the Round 3 European Spring appearances confirmed for Steagul Roșu Brașov (1965/66), Dinamo Pitești (1966/67) and Dinamo Bacău (1969/70) each earn one point; a quarter-final in the same campaign earns its own point. Do not give one bonus per match or count the same stage twice.

Pd examples

Two-leg qualifying tie: 2 points. Two-leg main-stage tie: 4. Six-match group: 12. Eight-match unique group: 16. Single-match final: 2.

Bonuses are outside Pd: 18 regular points plus 3 bonuses from Pd = 20 gives Pct = 105. The component is not capped.

4. Goal Balance · GB · 5%

GB = 100 × GF / (GF + GA)

Use combined goals from the same eligible entries, rather than averaging match percentages. GF means goals for; GA means goals against. If matches were played and both totals are zero, GB = 50. If there are no eligible matches, GB is unavailable. Shoot-out goals are excluded.

Combined SI example · illustrative values

Pv = 60, P = 55, Pct = 60 and GB = 60.

SI = 36 + 11 + 9 + 3 = 59.0

Eligibility and the score scale

All four components use the same completed, resolved Principal Competition entries. Ongoing participation is excluded until that club’s entry ends. A completed entry from the same season can already count. An unresolved completed entry prevents a final SI; it is not silently omitted to produce a partial score. Clubs with no eligible Principal Competition entries have no SI.

The Romanian index is displayed /100, but is not mathematically capped. Progression bonuses can make Pv exceed 100, and match bonuses are outside Pd; therefore Pct and theoretically the final SI can exceed 100. The site retains the agreed formula without clamping it. This differs from the opposition model, whose components are bounded by 100.

Opponent teams and countries: complete method and worked examples

1. Match success · MS · 20%

MS = 100 × (2 × wins + draws) / (2 × matches)

Use the old two-point system: a win earns 2, a draw 1 and a defeat 0. Include recorded qualifying, knockout, group and unique-group matches. For example, 4 wins, 3 draws and 3 defeats produce MS = 55.0. There is no MS when no scored matches exist.

2. Knockout qualification rate · KP · 40%

KP = 100 × successful Romanian outcomes / confirmed knockout encounters

Count each whole tie once, across all its legs and any deciding match. Qualifying rounds count. Groups and unique groups do not. A success means the Romanian club qualified for the next stage; in a final, it means winning the trophy.

Away goals, penalties and additional matches determine qualification independently of the match balance. Two drawn legs can therefore produce a successful or unsuccessful KP outcome, while both matches remain draws for MS. Ongoing, conflicting and unconfirmed outcomes are excluded.

Example

Six qualifications or final wins from ten confirmed knockout encounters give KP = 60.0.

3. Group qualification success · GO · 40%

GO = 100 × (Q + 0.50 S + 0.25 D) / (Q + S + D + N + O)

CategoryFinal outcomesValue
QRomanian club qualified in the same competition; opponent did not qualify there.1
SBoth clubs qualified in the same competition.0.50
DRomanian club transferred to another competition, regardless of the opponent’s outcome.0.25
NNeither club qualified nor transferred.0
ORomanian club was eliminated; opponent qualified or transferred.0

These letters describe group outcomes; D here means a transfer, rather than a drawn match. First exclude unfinished or unconfirmed outcomes. A Romanian transfer is always D. If Romania qualified, use S when the opponent also qualified in that competition, or Q otherwise. If Romania was eliminated, use O when the opponent continued, or N when neither continued.

One comparison means one Romanian club–opponent pair in one group phase, regardless of the number of matches. Country totals sum those opponent comparisons, rather than distinct group appearances. Use each edition’s final standings and qualification rules. Unique-group advancement to either the Round of 16 or the knockout phase play-offs counts as qualification.

This compares the clubs’ outcomes; it does not claim their head-to-head results decided qualification. Unique-group opponents may also have faced different schedules.

Example: six completed comparisons

Q = 2, S = 1, D = 1, N = 1, O = 1.

GO = 100 × (2 + 0.50 + 0.25) / 6 = 45.83

With KP = 60 and MS = 55:

SI = 0.40 × 60 + 0.20 × 55 + 0.40 × 45.83 = 53.33

Missing components and unfinished seasons

SI = sum of (available component × weight) / sum of available weights

Use weights KP = 40, MS = 20 and GO = 40. An unavailable component is omitted, rather than treated as zero. A confirmed zero keeps its weight. With KP = 60 and MS = 55 but no eligible GO, SI = (40 × 60 + 20 × 55) / 60 = 58.33.

Completed matches in an ongoing entry can contribute to MS, while unfinished knockout and group outcomes remain outside KP and GO. Each profile shows the sample sizes and any excluded outcomes.

How to read the comparison fairly

Small samples can create extreme scores. Compare the number of matches, confirmed knockout ties and group comparisons alongside the SI. Scores using different available components are not directly equivalent. This model does not adjust for opponent strength or distinguish qualifying-round strength from main-stage strength.

Shared recording rules and how to audit a score

Results, identities and rounding

  • Recorded awarded scores count in results, regular points and goals; biggest-result highlights exclude them.
  • Scores after extra time count. Shoot-out goals never enter match goals or W/D/L totals.
  • Romanian-versus-Romanian fixtures are excluded from opposition SI rankings. Each Romanian club’s own SI retains its own perspective on those matches.
  • Country rankings use the association recorded at the time of the match. Former associations remain separate.
  • Club profiles use the archive’s agreed canonical identities. Match-era names remain visible.
  • Calculate with unrounded components, sort before rounding and display scores to one decimal place. Exact ties share a rank.

Trace a score

  1. Open a Romanian club, country or opponent profile and find its SI panel.
  2. Read the included competition list, component values and sample sizes.
  3. For Romanian clubs, expand the competition-entry calculations to inspect Cal, TDis, TExp, PvE, regular points, Pd and bonuses.
  4. For opposition, read the knockout outcomes and group comparison breakdown, then check the supporting matches and standings.

The calculations use the match records and corrections held on this website. Publishing the formula makes it possible to check the arithmetic, but does not prove that every historical record is correct.

Help refine the Success Index

Have a question about a score or an idea for improving the method? Please use Contact & feedback.

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