South Dakota Codified Laws
Chapter 48 - Victim Immunity
Section 22-48-3 - Proof of assumption of risk.

22-48-3. Proof of assumption of risk.
Notwithstanding other evidence that the victim may adduce relating to the perpetrator's conviction of the crime involving the parties to a claim for relief, a certified copy of a guilty plea, a court judgment of guilt, a court record of conviction, or an adjudication as a delinquent child is conclusive proof of the perpetrator's assumption of the risk.

Source: SL 1998, ch 124, ยง3.