The 2015–16 European Rugby Champions Cup was the second European Rugby Champions Cup championship (21st overall), the annual rugby union club competition for teams from the top six nations in European rugby. The European Rugby Champions Cup replaced the Heineken Cup, which was Europe's top-tier competition for rugby clubs for the first nineteen years of professional European rugby union.
As a result of the 2015 Rugby World Cup being held in England, the tournament started slightly later than in previous seasons, with the opening round taking place on the weekend of 13/14/15 November 2015. The tournament was won for the first time by Saracens who beat Racing 92 in the final on the 14 May 2016, at Parc Olympique Lyonnais (called "Grand Stade de Lyon" by competition organiser European Professional Club Rugby) in the Lyon suburb of Décines. 
Teams.
20 clubs, from the three major European domestic leagues, competed in the Champions Cup. Nineteen clubs qualified directly as a result of their domestic league performance, with the final team coming from a play-off.
The distribution of teams was as follows:
20th team play-off.
The following teams took part in play-off matches to decide the final team in the Champions Cup. The play-off was held between Premiership side Gloucester, as Challenge Cup winners, and teams from the Pro12 and Top 14. The losers of this play-off joined the Challenge Cup.
The play-off was a two-match series, with the winner of the first match, Gloucester, progressing to the second, and the winner of that second match, Bordeaux Bègles, qualifying for the Champions Cup.
Team details.
Below is the list of coaches, captains and stadiums with their method of qualification for each team.
Seeding.
In each Champions Cup season, the 20 competing teams are seeded and split into four tiers, each containing 5 teams.
For the purpose of creating the tiers, clubs are ranked based on their domestic league performances and on their qualification for the knockout phases of their championships, so a losing quarter-finalist in the Top 14 would be seeded below a losing semi-finalist, even if they finished above them in the regular season. This represented a change for the English Premiership, which seeded teams for the 2014–15 Champions Cup without reference to their play-off performance, meaning Northampton Saints, who came top in the English Premiership, were seeded third - as the highest ranked losing semi-finalist. As a knock-on from this, Leicester Tigers, which came third in the league, dropped to fourth.
Based on these seedings, teams are placed into one of the four tiers, with the top seed clubs being put in Tier 1. The nature of the tier system means that a draw is needed to allocate two of the three second seed clubs to Tier 1, the remaining side being put into Tier 2. The draw also determines which fourth seed enters Tier 2, the place being given to the fourth seed from the league of the second seed placed in Tier 2. The other two sides fall into Tier 3. ;ref name="2015/16 draw" ;European Rugby Pool Draws for 2015/16 season - EPCRugby.com ;/ref ;
The tiers are shown below. Brackets show each team's seeding and their league (for example, "1 Top 14" indicates the team was seeded 1st from the Top 14).
The pool draw took place 17 June, in Neuchâtel, Switzerland.
The following restrictions applied to the draw:
Pool stage.
The draw took place on 17 June 2015.
Teams played each other twice, both at home and away, in the pool stage, that began on the weekend of 13/14/15 November 2015, and continued through to 22/23/24 January 2016, before the pool winners and three best runners-up progressed to the quarter-finals.
Teams were awarded competition points, based on match result. Teams receive 4 points for a win, 2 points for a draw, 1 attacking bonus point for scoring four or more tries in a match and 1 defensive bonus point for losing a match by seven points or fewer.
In the event of a tie between two or more teams, the following tie-breakers were used, as directed by EPCR:
Knock-out stage.
Format.
The four top teams hosted the quarter-finals against the four lower teams in a 1v8, 2v7, 3v6 and 4v5 format according to their ranking after the pool stages. The quarter-finals were played on the weekend of 8/9/10 April 2016.
The semi-finals were played on the weekend of 23/24 April 2016. In lieu of the draw that previously determined the semi-final pairing, EPCR announced that a fixed semi-final bracket would be set in advance, and that the home team would be designated based on "performances by clubs during the pool stages as well as the achievement of a winning a quarter-final match away from home". Semi-final matches must be played at a neutral ground in the designated home team's country.
Home country advantage was awarded as follows:
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The winners of the semi-finals contested the final, at Grand Stade de Lyon, on 14 May 2016.
Attendances.
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References.
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