The Royals announced that they have requested unconditional release waivers on right-hander Guillermo Moscoso (Twitter link). The Royals now have 39 players on their 40-man roster.
The Royals claimed Moscoso from Colorado in November after he posted a 6.12 ERA with 8.5 K/9 and 3.4 BB/9 in 50 innings for the Rockies last year. The 29-year-old started 21 games for the 2011 Athletics, posting a 3.38 ERA with 5.2 K/9 and 2.7 BB/9 in 128 innings. He also played briefly with the Rangers in 2009-10.
