Serious question:
Who was the last Big Ten basketball coach to resign? I can't think of any? I'm sure someone will prove me wrong, but to my memory coaches in the Big Ten retire or get fired they don't leave for other jobs on their own terms.
Off the top of my head:
Illinois lost Lon Kruger to the NBA.
Illinois lost Bill Self to Kansas.
Iowa lost Lute Olson to Arizona.
Iowa lost George Raveling to USC.
Iowa lost Steve Alford to New Mexico.
Michigan lost Johnny Orr to Iowa State.
Michigan lost Bill Frieder to Arizona State.
Ohio State lost Gary Williams to Maryland.
Purdue lost Lee Rose to South Florida.
Wisconsin lost Stu Jackson to the NBA.
Penn State lost Ed Dechallis to Navy.