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

In connection with the Quarterly Report of PetroCorp Incorporated (the
"Company") on Form 10-Q for the period ending March 31, 2003 as filed with the
Securities and Exchange Commission on the date hereof ("the Report"), I, Gary R.
Christopher, Chief Executive Officer of the Company, certify, pursuant to 18
U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002, that:

     (1) The Report fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934; and

     (2) The information contained in the Report fairly presents, in all
material respects, the financial condition and results of operation of the
Company.


/s/ Gary R. Christopher

Gary R. Christopher
Chief Executive Officer
May 7, 2003


A signed original of this written statement required by Section 906 has been
provided to PetroCorp Incorporated and will be retained by PetroCorp
Incorporated and furnished to the Securities and Exchange Commission or its
staff upon request.