A few months later, he lost his bronze medal match in the men's 68 kg event at the 2019 Pan American Games held in Lima, Peru.

[3] In 2021, Nickolas won the gold medal in the men's 80 kg at the Pan American Taekwondo Championships held in Cancún, Mexico.

In that same year, he won the gold medal in his event at the 2021 Junior Pan American Games held in Cali, Colombia.

[4] Nickolas won the gold medal in his event at the 2022 Pan American Taekwondo Championships held in Punta Cana, the Dominican Republic.

[2] He lost his bronze medal match in the men's 80 kg event at the 2024 Summer Olympics held in Paris, France.