Ramiro Ibarra challenges his judgment and sentences for trafficking in cocaine and conspiracy to traffic in cocaine. Although he asserts two grounds on appeal that he contends require a new trial, we address only his argument that the trial court reversibly erred when it allowed the State to impeach him with a previously undisclosed statement without first conducting a Richardson
At trial, Ibarra, who claimed he was entrapped, testified in his own defense. After he testified, the State announced its intention to call a police detective as a rebuttal witness. The State indicated the detective would testify about an oral statement Ibarra made to the detective that was contrary to Ibarra’s trial testimony. The State had not previously disclosed the content of the statement as required by Florida Rule of Criminal Procedure 3.220(b)(1)(C). Defense counsel
The standard for determining whether reversal is required for failing to conduct a Richardson hearing is hannless error. State v. Schopp, 653 So.2d 1016, 1020-21 (Fla.1995). The error is harmless only when the State can demonstrate, beyond a reasonable doubt, that the aggrieved party was not proeedurally prejudiced by the discovery violation. Id. at 1020. “As used in this context, the defense is proeedurally prejudiced if there is a reasonable possibility that the defendant’s trial preparation or strategy would have been materially different had the violation not occurred.” Id. Because we cannot say beyond a reasonable doubt that the defense was not proeedurally prejudiced by the State’s surprise use of Ibar-ra’s statement to the detective, we must reverse and remand for a new trial. See, e.g., Portner, 802 So.2d at 446 (“In most cases, the decision whether a defendant will testify is a strategic call which can materially alter the outcome of a case. A defendant’s ability to make an informed decision in this regard is certainly affected by the state’s nondisclosure of impeachment material discoverable under the rules.”).
Reversed and remanded for a new trial.
. See Richardson v. State, 246 So.2d 771 (Fla. 1971).
