Former TCU star Charles Silmon qualified for the IAAF World Championships by running a 9.98 to finish third in the 100 meters on Friday night at the U.S. championships in Des Moines, Iowa.Silmon beat Michael Rodgers by two-thousandths of a second.“It was a crazy race,” Silmon said. “I kind of panicked a little bit when I realized how close I was to the elite professionals. I got my composure back and finished strong.” Tyson Gay overcame a slow start to win the 100 meters, surging past Justin Gatlin halfway through the race. Gay proved once and for all his surgically repaired hip is just fine as he finished in a time of 9.75 seconds, the fastest in the world this season. Jessica Young of TCU finished sixth in her heat and wasn’t among the advancing runners. She posted a time of 11.16 and finished 12th overall.Silmon and Young will compete in the 200-meter dash Saturday, and Whitney Gipson will take part in the women’s long jump.The IAAF World Championships are in August in Moscow.Octavious Freeman was second and Alexandria Anderson took third to round out the team headed to Moscow for the world championships in August. Former Kennedale and UT Arlington standout Cordero Gray didn’t qualify for the men’s 100 finals, finishing with the 12th-best time in the semifinals.North Texas freshman Bryce McAndrew didn’t advance in the 1,500-meter prelims for junior men, finishing 23rd.UNT senior Steven White, third in the NCAA 400 hurdles earlier this month, was disqualified in his heat Thursday, failing to advance.