The facts and procedural history of the case, Taylor v. Illinois, are detailed, with emphasis on the Court's failure to apply a balancing test in deciding the case. The article argues that in establishing a standard for a trial court to preclude testimony when a willful violation of discovery rules occurs, the Court did not consider all the important factors to be balanced. As a result, the defendant was denied his sixth amendment right to present testimony in his behalf. The article argues for a detailed balancing test to be used by courts when deciding to preclude testimony so that defendants' right to present testimony can be protected. 246 footnotes.