20:04:30:81Exchange in case of a scratch in the second race.
Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
If a horse is scratched in the second race of the big perfecta, the holders of tickets on the scratched horse may exchange their tickets for another selection.
Source: 5 SDR 87, effective April 15, 1979; transferred from § 20:04:09:74, 9 SDR 122, effective March 31, 1983; 12 SDR 151, 12 SDR 155, effective July 1, 1986.