1 EXHIBIT 16 [ARTHUR ANDERSON LETTERHEAD] Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 March 30, 2000 Dear Sir/Madam, We have read the second, third and fourth paragraphs of Item 9 included in the Form 10-K dated March 30, 2000 of Prize Energy Corp. filed with the Securities and Exchange Commission and are in agreement with the statements concerning our firm contained therein. Very truly yours, /s/ ARTHUR ANDERSON LLP cc: Mr. C. Randall Hill, Vista Energy Resources, Inc. Mr. Lon Kile, Prize Energy Corp.