I agree with all the above except Union is also on upset alert. I don't even know if Central and Lebanon are upsets. If one or both wins, I would call it a win over a somewhat closely matched opponent. On an average day, I don't think Union, Lebanon, Graham, and Central are outside 6 points to 7 points of each other, and 6 to 7 points in basketball isn't much. It's not enough for team A to beat team B 90 percent of the time. The margin or chances are more narrow than that.
I'll go GC, Union, VH, and Graham.