Alva Sundberg/Axel Yseus (Karlstad, SWE) lost 8-4 to Sofie Bergman/Jacob Hanna (Fyris, SWE) in the Bronze Medal game at the 2023 Swedish Mixed Doubles Championship in Gavle, Sweden. of the 2023 Swedish Mixed Doubles Championship in Gavle, Sweden; Alva Sundberg/Axel Yseus (Karlstad, SWE) lost 8-4 to Sofie Bergman/Jacob Hanna (Fyris, SWE) in the Bronze Medal game at the 2023 Swedish Mixed Doubles Championship in Gavle, Sweden. Sundberg/Yseus lost 14-6 to Isabell Andersson/Simon Granbom (Granit, SWE) in the semifinals to drop into the third place game. of the 2023 Swedish Mixed Doubles Championship in Gavle, Sweden; and won 8-7 over Linnea Nilsson/Simon Olofsson (Fyris, SWE) in the quarterfinals. of the 2023 Swedish Mixed Doubles Championship in Gavle, Sweden;
 
Sundberg/Yseus finished 2-2 in the 0-team qualifying round. . In their opening game, Sundberg/Yseus lost 11-3 to Bergman/Hanna, then responded with a 8-3 win over Emelie Saren/Alexander Palm (Harnosands, SWE). Sundberg/Yseus won 6-0 against Johanna Heldin/Daniel Magnusson (Karlstad, SWE). Sundberg/Yseus went on to lose 9-7 against Nilla Hallstroem/Johannes Patz (Harnosands, SWE) in their final qualifying round match.
 
Sundberg/Yseus ranks 245th overall on the Year-to-Date rankings with 0.750 points earned so far this season.