Union Beynoise was one of 13 clubs from Belgium that had teams playing during Partille Cup 2013. They participated with one team in Boys 15. In addition to Union Beynoise, 85 other teams from 19 different countries played in Boys 15. They were divided into 14 different groups, whereof Union Beynoise could be found in Group 9 together with Besiktas JC, IK Sävehof 1, Sotra SK, IBV and Eslövs HF. Union Beynoise continued to A-Play-off after reaching 2:nd place in Group 9. In the playoff they made it to 1/16 Final, but lost it against HIB Handball Graz with 13-16. In the Final, Hjortshöj Egå IF 1 won over THW Kiel and became the winner of A-Play-off in Boys 15. Union Beynoise comes from 4624 which lies approximately 900 km from Göteborg, where Partille Cup takes place. The area around 4624 does also provide three additional clubs participating during Partille Cup 2013 (HC Eynatten-Raeren, HV Marsna and Ligue Francophone de Handball).