| WTT Saudi Smash XD | 05/04 18:40 | 5 | Luu/Kukulkova v Kallberg/Karlsson | W | 0-3 | |
| Olympic Qualification XD | 04/12 17:45 | - | Karlsson/Kallberg v Pistej/Balazova | W | 4-0 | |
| Olympic Qualification XD | 04/12 16:15 | - | Chew/Zeng v Karlsson/Kallberg | W | 2-3 | |
| Olympic Qualification XD | 04/12 12:42 | - | Sanguansin/Paranang v Karlsson/Kallberg | W | 1-4 | |
| Olympic Qualification XD | 04/11 16:15 | - | Wong/Doo v Karlsson/Kallberg | L | 3-2 | |
| WTT Feeder Varazdin XD | 04/06 17:00 | 1 | Wong/Pang v Karlsson/Kallberg | W | 2-3 | |
| WTT Feeder Varazdin XD | 04/06 08:00 | 2 | Karlsson/Kallberg v Balazova/Pistej | W | 3-2 | |
| WTT Feeder Varazdin XD | 04/05 08:00 | 3 | Kim/Park v Karlsson/Kallberg | W | 2-3 | |
| WTT Feeder Varazdin XD | 04/04 08:45 | 4 | Istrate/Singeorzan v Karlsson/Kallberg | W | 1-3 | |
| Singapore Smash XD | 03/12 13:10 | 4 | Lin/Chen v Karlsson/Kallberg | L | 3-2 | |
| Singapore Smash XD | 03/10 13:40 | 5 | Burgos/Vega v Karlsson/Kallberg | W | 0-3 | |
| WTT Contender Doha XD | 01/17 10:00 | 4 | Wang/Sun v Kallberg/Karlsson | L | 3-1 | |
| WTT Contender Antalya MD | 10/21 13:20 | 2 | Karlsson/Kallberg v Majoros/Ecseki | L | 0-3 | |
| WTT Contender Antalya MD | 10/20 07:50 | 3 | Gunduz/Abdullah Yigenler v Karlsson/Kallberg | W | 0-3 | |
| WTT Contender Muscat MD | 10/14 10:40 | 1 | Kallberg/Karlsson v Franziska/Ovtcharov | L | 0-3 | |
| WTT Contender Muscat MD | 10/13 10:50 | 2 | Kallberg/Karlsson v Pitchford/Jarvis | W | 3-0 | |
| WTT Contender Muscat MD | 10/12 06:00 | 3 | Karlsson/Kallberg v Qiu/Duda | W | 3-2 | |
| WTT Contender Muscat MD | 10/11 11:05 | 4 | Lim/An v Kallberg/Karlsson | W | 1-3 | |
| WTT Contender Lima XD | 08/05 01:00 | 2 | Xiao/Robles v Karlsson/Kallberg | L | 3-1 | |
| WTT Contender Lima XD | 08/04 18:30 | 3 | Rossi/Vivarelli v Karlsson/Kallberg | W | 0-3 | |
| WTT Contender Lima XD | 08/03 15:50 | 4 | Karlsson/Kallberg v Batra/Gnanasekaran | W | 3-1 | |
| WTT Contender Lima XD Quals | 08/02 19:00 | - | Karlsson/Kallberg v Monfardini/Oyebode | W | 3-0 | |
| WTT Contender Lima XD Quals | 07/31 17:50 | - | Pavade/Lebrun v Karlsson/Kallberg | W | 1-3 | |
| European Championships XD | 08/14 07:30 | 5 | Karlsson/Kallberg v Kozul/Strazar | L | 1-3 | |
| WTT Contender Doha XD | 03/22 07:40 | 3 | Kallberg/Karlsson v Gnanasekaran/Batra | L | 1-3 | |
| WTT Contender Doha XD | 03/21 15:00 | 4 | Kallberg/Karlsson v Gauzy/Pavade | W | 3-1 | |
| Olympics 2020 - Team Men | 08/03 01:00 | 3 | Niwa/Harimoto v Karlsson/Kallberg | L | 3-1 | |
| Olympics 2020 - Team Men | 08/02 01:00 | 3 | Kumar/Zhou v Karlsson/Kallberg | W | 0-3 | |
| Korea Open MD | 07/05 02:15 | 4 | Kallberg/Karlsson v Jang/Lim | L | 0-3 | |
| Korea Open MD | 07/04 03:40 | 5 | Kallberg/Karlsson v Josh Shao Han Chua/Pang | W | 3-0 |