Martinelli was reportedly surprised by the news, despite being on the preliminary list. In an interview with Flu TV, he expressed his gratitude and humility, stating that he never thought he would be called up at 24 years old. "I didn't think it would happen so quickly, even in my best dreams," he said. "I hope to continue performing well with Fluminense and have my chance with the national team now too."
Martinelli's call-up came after the original list was announced on September 9. He had been watching the announcement with his wife, Laura Bacurau, but was not initially selected. However, the opportunity arose when the team's attacker, João Pedro, was cut from the squad, allowing Martinelli to be called up. The news was delivered by his agent over the phone, and his reaction was captured on security cameras at his home and shared on social media by his wife.