One I. U. Mat Star SurvivesBy Unitrti Pres*COLUMBUS, O., July 9.—Twenty-three surviving aspirants to membership on the United States Olympic wresting team wil battle it out tonight in the final session of the week-long tryouts for the seven principal and seven alternate places on the team. Seventy-five entrants have been eliminated in the first ; four sessions of the tourney.Clarence Hawkins, 123-pound star, was the only Indiana U. survivor of the ten who started. Ed Belshaw, 1134 pounds; George Belshaw, 158 pounds: Ambrose Rascher andRichard Voliva, 174 pounds; Robert Jones. 191 pounds, and Ernest Zellers, Indiana state heavyweight, were beaten in the fourth round. Other Hoosiers were eliminated Thursday.