Okla. Stat. tit. 12, § 12-2613: Prior statements of witnesses

A. In examining a witness concerning a prior statement made by

the witness whether in a record or not, the statement need not be

shown nor its contents disclosed to the witness at that time but on

request the same shall be shown or disclosed to opposing counsel

just prior to the cross-examination of the witness.

B. Extrinsic evidence of a prior inconsistent statement by a

witness is not admissible unless the witness is afforded an

opportunity to explain or deny the same and the opposite party is

afforded an opportunity to interrogate the witness thereon. This

provision does not apply to admissions of a party opponent as

defined in paragraph 2 of subsection B of Section 2801 of this

title.