[4] On October 6, 2018 Vitez defeated Cristian Rodriguez Rojo by knockout in the first round at Enfusion Talents 59.
[5] Vitez faced Moha Salih for the Spanish National Muay Thai -58 kg title at Cinturón Profesional MTR on November 17, 2018.
His two fight winning streak was stopped by Brandon Vieira at Divonne Muaythai Challenge 4 on March 16, 2019, who beat him by unanimous decision.
[11] After capturing the ISKA European Muaythai at Noia Fighters 4 on February 8, 2020, with a unanimous decision win over Diogo Silva, Vitez returned to MFC.
He notched two unanimous decision victories, over Lusimi Salar on August 1 and Miguel Brito on September 12, 2020, before being booked to face Alex Dass at MFC 012 on June 5, 2021.
Vitez faced Fabio Loisi for the vacant WAKO-Pro World K-1 lightweight title at MFC 022 on August 6, 2022.
[20] Vitez made his first WAKO-Pro K-1 World Lightweight (-60 kg) title defense against Djany Fiorenti at La Nuit Des Champions 30 on November 18, 2023.