| Group A | 03/03/2021 | Kashima Antlers | - | Sagan Tosu | 3:0 | ||||
| Group A | 20/04/2021 | Kashima Antlers | - | Hokkaido Consadole Sapporo | 3:0 | ||||
| Group A | 28/04/2021 | Sagan Tosu | - | Kashima Antlers | 2:2 | ||||
| Play-offs | 02/06/2021 | Shimizu S-Pulse | - | Kashima Antlers | 0:1 | ||||
| Play-offs | 06/06/2021 | Kashima Antlers | - | Shimizu S-Pulse | 2:1 | ||||
| Quarter-finals | 01/09/2021 | Nagoya Grampus | - | Kashima Antlers | 2:0 | ||||
| Quarter-finals | 05/09/2021 | Kashima Antlers | - | Nagoya Grampus | 0:2 |
Japan