Hot on his heels was Ismailia Nezir of Turkey, who finished second with a time of 49.40s, while Matic Gucek of Slovenia rounded out the podium in 49.49s.
Sibilio's performance marks a solid start to his Diamond League campaign, demonstrating his ability to close races with power and precision. His victory sets the tone for what promises to be an exciting season ahead in the 400m hurdles.