Answer
Fernandinho's 2023 club, Athletico Paranaense, competes in the Campeonato Brasileiro Série A, the top tier of Brazilian football. The league is known for its competitive nature and high level of play, featuring some of the best players in South America. Athletico Paranaense is a traditional club in Brazilian football, having won the Copa Sudamericana in 2018 and the Copa do Brasil in 2019.