Wisconsin Statutes Actions and Proceedings in Special Cases (Ch. 775 to 788) § 788.10. Vacation of award, rehearing by arbitrators

(a) Where the award was procured by corruption, fraud or undue means;

(b) Where there was evident partiality or corruption on the part of the arbitrators, or either of them;

(c) Where the arbitrators were guilty of misconduct in refusing to postpone the hearing, upon sufficient cause shown, or in refusing to hear evidence pertinent and material to the controversy; or of any other misbehavior by which the rights of any party have been prejudiced;

(d) Where the arbitrators exceeded their powers, or so imperfectly executed them that a mutual, final and definite award upon the subject matter submitted was not made.