Former Cardinals first baseman Jack Clark is asking a court to dismiss a defamation lawsuit filed against him by fellow former St. Louis slugger Albert Pujols. The lawsuit followed comments Clark made on his St. Louis radio show in August. Clark said he knew for a fact that Pujols "was a juicer." Pujols has vehemently denied using performance-enhancing drugs. WGNU radio has canceled the radio show hosted by Clark and Kevin Slaten, and the station's owner broadcast a lengthy apology and posted similarly contrite statements on its website. Pujols' lawsuit was filed in October. It names Clark but does not name the radio station or Slaten. In a court motion filed Monday, Clark argued that the lawsuit fails to make the case that Pujols was defamed.