Interleague play begins today for the Royals. K.C. hosts Arizona and RandyJohnson will pitch for the Diamondbacks. Newly-acquired Paul Byrd, pickedup by the Royals from Philadelphia in exchange for Jose Santiago, willthrow for Kansas City.The Cardinals are in Colorado. The Rockies and Cards are the only two MLBteams not participating in interleague play. Mike Matthews on the moundfor St. Louis. Denny Neagle for Colorado.