Show I Four Players Payers I Join Seals' Seals Camp CampEL EL CENTRO Cal Feb 21 UP Four UP-Four Four more players were due in the San Francisco Seals Seals' training camp here Tuesday but pitcher Elmer Singleton wont won't be among them Singleton and the Seals are haing hasing having has hav ing contract trouble Manager Lefty ODoul who cho welcomed welcomed wel wel- vel- vel 26 players to camp Monday Monday Monlay Mon Mon- day lay said pitchers Manny 1 Perez Chet diet Johnson and Xavier and catcher Roy Partee would check in m Tuesday The Seals scheduled scheduled scheduled sched sched- morning workouts only because because be be- cause ause of ot the heat |