American Kennel Club, Retriever Field Trial Rules [akc.org] Chapter 14, Section 4.
"Notwithstanding the first sentence of this Section 4, any club may, at its election, provide that the order of running in any one or more stakes at a trial shall be in the order of the draw beginning with the dog with the number given at the draw which corresponds with the last two digits (including digits, if any, to the right of the decimal point) of the closing Dow Jones Industrial Average (the 'DJIA Number') on the Tuesday immediately preceding the trial or, if the New York Stock Exchange is not open for business on such Tuesday, then the most recent day prior to such Tuesday when the New York Stock Exchange is open for business, and continuing thereafter in numerical sequence. If the DJIA Number is 00, the dog given number one at the draw shall be the first running dog. If the DJIA Number is greater than the number of dogs entered in a stake, the number equal to the number of dogs entered in such stake shall be subtracted from the DJIA number and such stake shall begin with the dog with the number given at the draw which corresponds with the number resulting from such subtraction (the 'Second DJIA Number') and continue thereafter in numerial sequence. If the Second DJIA Number is greater than the number of dogs entered at such stake, such subtraction process shall be repeated as many times as necessary (subtracting from the Second DJIA Number and each subsequent resulting number, if any, the number of dogs entered at such stake) until the number resulting from such subtraction corresponds with a number given at the draw to a dog entered in such stake and such shall begin with such dog and continue thereafter in numerial sequence. Notice of such election shall be included in the premium list sent to prospective contestants by the club."

In the event of any disagreements the number published in the "Minneapolis Star-Tribune" the Tuesday prior to the trial shall be the official number.