7:08pm: Rodriguez has been placed on unconditional release waivers, tweets McCullough.
6:43pm: To clear a space for the just-acquired Josh Willingham, the Royals have removed Wilking Rodriguez from the 40-man roster, tweets Andy McCullough of the Kansas City Star. It is not yet clear precisely what transaction effected his removal, but presumably Rodriguez was designated for assignment.
The 24-year-old righty saw his first MLB action this year, throwing two scoreless innings of relief for Kansas City. After spending most of his time as a starter with the Rays organization, Rodriguez shifted to a pen role in the upper minors for the Royals after struggling with shoulder issues and joining the club as a minor league free agent. Over 26 2/3 frames at Double-A and Triple-A this year, he owns a 2.36 ERA with 9.1 K/9 against 4.0 BB/9.