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| H | Buriram United | - | Bunyodkor PFK | 2:1 (1:1) | ||
| R | Bunyodkor PFK | - | Buriram United | 0:0 (0:0) | ||
| H: 14.05.2013 13:00 | R: 21.05.2013 16:00 | Sieger: Buriram United | ||||
| H | Beijing Guoan | - | FC Seoul | 0:0 (0:0) | ||
| R | FC Seoul | - | Beijing Guoan | 3:1 (0:1) | ||
| H: 14.05.2013 13:30 | R: 21.05.2013 12:30 | Sieger: FC Seoul | ||||
| H | Al Gharafa | - | Al Shabab | 1:2 (1:0) | ||
| R | Al Shabab | - | Al Gharafa | 3:0 (1:0) | ||
| H: 14.05.2013 17:45 | R: 21.05.2013 19:50 | Sieger: Al Shabab | ||||
| H | El Jaish SC | - | Al Ahli SFC | 1:1 (0:1) | ||
| R | Al Ahli SFC | - | El Jaish SC | 2:0 (2:0) | ||
| H: 14.05.2013 18:00 | R: 21.05.2013 19:45 | Sieger: Al Ahli SFC | ||||
| H | Central Coast Mariners | - | Guangzhou Evergrande | 1:2 (1:1) | ||
| R | Guangzhou Evergrande | - | Central Coast Mariners | 3:0 (2:0) | ||
| H: 15.05.2013 11:30 | R: 22.05.2013 14:00 | Sieger: Guangzhou Evergrande | ||||
| H | Jeonbuk FC | - | Kashiwa Reysol | 0:2 (0:1) | ||
| R | Kashiwa Reysol | - | Jeonbuk FC | 3:2 (1:1) | ||
| H: 15.05.2013 12:00 | R: 22.05.2013 12:00 | Sieger: Kashiwa Reysol | ||||
| H | Al Shabab Al Arabi | - | Esteghlal | 2:4 (1:0) | ||
| R | Esteghlal | - | Al Shabab Al Arabi | 0:0 (0:0) | ||
| H: 15.05.2013 17:40 | R: 22.05.2013 18:30 | Sieger: Esteghlal | ||||
| H | Al Hilal | - | Lekhwiya SC | 0:1 (0:0) | ||
| R | Lekhwiya SC | - | Al Hilal | 2:2 (1:0) | ||
| H: 15.05.2013 20:00 | R: 22.05.2013 17:30 | Sieger: Lekhwiya SC | ||||
