Maryland Courts and Judicial Proceedings Section 3-211
§ 3-211.
  (a)   If the arbitration agreement provides a method of appointment of arbitrators, this method shall be followed.
  (b)   In the absence of a provision in the agreement, a party may file a petition with a court to appoint one or more arbitrators.
  (c)   A court shall appoint one or more arbitrators if:
    (1)   The arbitration agreement does not provide a method of appointment;
    (2)   The agreed method fails or for any reason cannot be followed; or
    (3)   An appointed arbitrator fails or is unable to act and his successor has not been appointed.
  (d)   A court appointed arbitrator has all the powers of an arbitrator specifically named in the agreement.