ROME: Usain Bolt says he is “slightly nervous” for the first time in his career. The 100m world record-holder will make his season debut in Thursday's Golden Gala meet in Rome, for his first race getting beat by Tyson Gay in Stockholm last August. Bolt says he has added more muscle to his frame and he wants “to prove to the world that I'm still the best.” Bolt will face fellow Jamaican and former world record-holder Asafa Powell, as well as European champion Christophe Lemaitre. Bolt is also planning to race in Ostrava and Oslo.