The 1989-90 Major Indoor Soccer League season was the 12th in league history.
Final Standings
Playoff teams in bold.
Div. Semi-finals: Kansas City defeated Wichita 5-4, 4-3, 3-4, 5-4 San Diego defeated St. Louis 3-2, 3-4 (OT), 4-1, 5-4 Div. Finals: San Diego defeated Dallas 4-2, 1-6, 1-4, 4-2, 4-0,3-1 Baltimore defeated Kansas City 6-4, 4-2, 2-1(OT), 2-3(OT), 2-3(OT), 7-2 Championship: San Diego def. Baltimore 4-7, 4-3, 5-2, 4-1, 2-3,6-4.References
1989–90 Major Indoor Soccer League season Wikipedia(Text) CC BY-SA