The 2017 CAF Champions League knockout stage was played from 8 September to 4 November 2017.[1] A total of eight teams competed in the knockout stage to decide the champions of the 2017 CAF Champions League.[2]
The winners and runners-up of each of the four groups in the group stage advanced to the quarter-finals.
| Group | width=200 | Winners | width=200 | Runners-up |
|---|---|---|---|---|
| A |  Étoile du Sahel |  Ferroviário Beira | ||
| B | USM Alger |  Al Ahli Tripoli | ||
| C | Espérance de Tunis | Mamelodi Sundowns | ||
| D |  Wydad AC |  Al Ahly |
In the knockout stage, the eight teams played a single-elimination tournament. Each tie was played on a home-and-away two-legged basis. If the aggregate score was tied after the second leg, the away goals rule would be applied, and if still tied, extra time would not be played, and the penalty shoot-out would be used to determine the winner (Regulations III. 26 & 27).[2]
The schedule of each round was as follows.[1] [3] [4]
| Round | First leg | Second leg | |
|---|---|---|---|
| Quarter-finals | 15–17 September 2017 | 22–24 September 2017 | |
| Semi-finals | 29 September – 1 October 2017 | 20–22 October 2017 | |
| Final | 27–29 October 2017 | 3–5 November 2017 |
The calendar was amended from the original one for the following dates:[4]
The bracket of the knockout stage was determined as follows:[2]
| Round | Matchups | |
|---|---|---|
| Quarter-finals | (Group winners host second leg)
| |
| Semi-finals | (Order of legs decided by draw)
| |
| Final | (Order of legs decided by draw)
|
The order of legs for the semi-finals and final was decided by an additional draw held after the group stage draw on 26 April 2017, 14:00 EET (UTC+2), at the CAF Headquarters in Cairo, Egypt.[5] [6]
In the quarter-finals, the winners of one group played the runners-up of another group, with the group winners hosting the second leg.[2]
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Étoile du Sahel won 2–0 on aggregate.----Al-Ahly won 4–3 on aggregate.----1–1 on aggregate. USM Alger won on away goals.----1–1 on aggregate. Wydad AC won 3–2 on penalties.
In the semi-finals, the four quarter-final winners played in two ties, with the order of legs decided by an additional draw held after the group stage draw.[7]
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Al-Ahly won 7–4 on aggregate.----Wydad AC won 3–1 on aggregate.
See main article: article and 2017 CAF Champions League Final. In the final, the two semi-final winners played each other, with the order of legs decided by an additional draw held after the group stage draw.[8] Wydad Casablanca won 2–1 on aggregate.