Exhibit 99.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 The undersigned hereby certifies in his capacity as Chief Executive Officer of Belport Capital Fund LLC (the "Fund"), that: (a) the Annual Report of the Fund on Form 10-K for the year ended December 31, 2002 (the "Report") fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934, as amended; and (b) the information contained in the Report fairly presents, in all material respects, the financial condition and the results of operations of the Fund for such period. Dated: March 26, 2003 /s/ Thomas E. Faust Jr. ----------------------- Thomas E. Faust Jr. Chief Executive Officer