KAZAN, Russia (AP) Olympic champion Sun Yang of China did not swim in the final of the 1,500-meter freestyle at the world championships.
The two-time defending champion wasn't introduced Sunday night along with the rest of the seven-man field. There was no immediate explanation for his absence.
Sun won the 400 and 800 freestyles in Kazan and was heavily favored to win the 1,500. He finished second in the 200 free.
In Sun's absence, Gregorio Paltrinieri of Italy won the grueling race. He finished second to Sun in the 800.
Sun was back at the biggest meet before next year's Olympics after serving a doping suspension last year.