The Kansas City Royals have bolstered their bullpen by acquiring Jason Frasor from the Texas Rangers.

Texas acquired right-handed pitcher Spencer Patton, who has spent the entire season at Triple-A Omaha, in exchange for Frasor.

Frasor, 36, will help solidify Kansas City's middle relief for a bullpen that is strong in the back end thanks to setup man Wade Davis (1.13 ERA, 17 holds) and closer Greg Holland.