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11/27/2013 3:06 P.M. ET

Arguelles clears waivers, outrighted to Omaha

KANSAS CITY -- Left-handed pitcher Noel Arguelles cleared waivers and was assigned outright to Triple-A Omaha, the Royals announced on Wednesday.

Arguelles, a Cuban defector who signed for $6.9 million on Jan. 5, 2010, has battled various injuries while in the Royals' system. Hampered by a sore groin this year, he pitched primarily for Double-A Northwest Arkansas and went 1-8 with a 5.93 ERA in 25 games (11 starts).

Pitching for Peoria in the Arizona Fall League, he gave up 12 runs on 12 hits and 15 walks in 12 1/3 innings in nine games.

The Royals also officially released infielder Irving Falu from the roster. Both Arguelles and Falu were designated for assignment on Nov. 20.

Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.