Rays designated RHP Juan Carlos Oviedo for assignment. The 32-year-old right-hander posted a 3.69 ERA, 1.36 WHIP and 26/16 K/BB ratio over 31 2/3 innings with the Rays. It speaks to the depth that they have in the bullpen that they can release a solid veteran bullpen arm. He shouldn't have difficulty latching on elsewhere.