The UEFA Women's Champions League comprises a qualifying group stage, four rounds of two-legged knockout ties and a one-off final.
The lower-ranked champion clubs compete in four-team, one-venue mini-tournaments hosted by one of the competitors.
The qualifying round winners and two best runners-up join the teams given a bye past that stage in the round of 32. From hereon the competition consists of two-legged knockout ties, continuing with the round of 16, which is drawn along with the last 32. The draw for the remainder of the competition is then made, with quarter-finals and semi-finals played over two legs. If scores are level after 90 or 120 minutes of the second leg, the team with the most away goals wins, otherwise a penalty shoot-out is held.
The 2014/15 edition concludes at the Friedrich-Ludwig-Jahn-Sportpark in Berlin, which also stages the men's final.
Further details, including the criteria for separating teams that finish level on points in a group, can be found in the official competition regulations.
The UEFA Women's Champions League final is on Thursday 23 May at 19.30 local time at Stamford Bridge in London.
All media events on Wednesday will be held at Stamford Bridge
17.00: Press conference Olympique Lyonnais
17.30-18.30: Official training Olympique Lyonnais
18.30: Press conference VfL Wolfsburg
19.00-20.00: Official training VfL Wolfsburg
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