The Royals have designated third baseman/outfielder Edinson Rincon for assignment, according to Bob Dutton of the Kansas City Star (on Twitter). Rincon's DFA is one of several moves that will allow Kansas City to make a wave of September callups that include Carlos Pena and Pedro Ciriaco.
The Royals claimed Rincon off release waivers from the Padres earlier this season. Formerly one of the Padres' top 10 prospects according to Baseball America, Rincon has seen his stock fall, and injuries have held him to 95 plate appearances this season. In that small sample, he raked at the Rookie-level Arizona League and struggled tremendously in Double-A. In parts of seven minor league seasons, the Dominican native is a .285/.354/.418 hitter, but he's yet to advance past the Double-A level.
Rincon and the other 10 players that are currently in DFA limbo can be monitored using MLBTR's DFA Tracker.