Seager appendectomy leaves SS role to TEX newcomer Dylan Moore  BaseballHQ.comRangers’ Corey Seager has appendectomy; return date unknown  ESPNSeager to undergo appendectomy, no timetable for return yet  MLB.comRangers calling up ex-M’s UT Dylan Moore with Seager to IL  Seattle SportsRangers shortstop Corey Seager undergoes appendectomy, out indefinitely  Yahoo Sports