That is what I thought!
Your article from WMU seemingly suggests a five team semi-final.
Amateur soccer meets amateur copy editing.
"The seeding for the tournament will see Western as the number one seed, Akron will take the second seed, newcomers to the conference Southern Illinois University have the third seed and rounding out the field will be Bowling Green as the fourth seed."
"You can see the fifth ranked WMU men’s soccer team in action when they host West Virginia University in the first round of the MAC tournament here in Kalamazoo, Mich. on Nov. 10. The finals of the MAC tournament will be hosted at the WMU Soccer Complex as well on Nov. 12."