Party-Appointed Arbitrators in International Commercial Arbitration presents a detailed examination, long overdue, of how the agreement of disputing parties to each make a unilateral agreed-upon appointment of an arbitrator affects the actual process of arbitration. The topic of unilateral nominations itself is of general interest to everyone in the arbitration community. Three-member arbitral tribunals with two party-appointed arbitrators are the most frequent tribunals in international arbitration and, therefore, virtually all arbitration practitioners are often confronted with questions about the system of unilateral nominations. This book takes a step forward by offering a comprehensive study of the system of party-appointed arbitrators in international commercial arbitration. The study takes a three-pronged approach: historical analysis of unilateral nominations, a theoretical critical assessment of how the system of unilateral nominations currently works and a comparative empirical study of challenges of arbitrators depending on the method of appointment.