Siouxland United 2-0 Sioux Falls Thunder. Final result from the NPSL, Conference - Semi-finals. In 5 previous meetings, Siouxland United have won 3 while Sioux Falls Thunder have 2 victories. Siouxland United have scored 30 goals this season (averaging 2.1 per game), while Sioux Falls Thunder have netted 15 (1.4 per game). Explore full match stats, lineups and live updates on this page.