Söderköping Basket was one of 24 clubs from Sweden that had teams playing during Stadium Basketball Cup 2018. They participated with two teams in Boys 07 and Girls 07 respectively. Two teams played until Final in Slutspel A; Boys 07 lost against Liepaja by 25-44 and Girls 07 lost against KFUM Katrineholms IF by 14-16.

In addition to this, Söderköping Basket have participated in Stadium Basketball Cup before. During Stadium Basketball Cup 2017, Söderköping had three teams playing in Boys 03, Girls 04 and Girls 03 respectively. Three teams played until Placeringsmatch 5-6 in Slutspel A; Boys 03 lost against Alvik Basket by 31-60, Girls 04 lost against Spånga Basket by 0-20 and Girls 03 lost against Norrköping Dolphins by 28-38.

Söderköping comes from Söderköping which lies approximately 16 km from Norrköping, where Stadium Basketball Cup takes place. The area around Söderköping does also provide two additional clubs participating during Stadium Basketball Cup 2018 (Söderköping and Norrköping Dolphins).