Jon Mersinaj is an Albanian professional footballer who plays as a centre-back for Croatian top-flight club NK Osijek, representing his nation on the international stage. The defender began his career in his homeland before making a significant move to Croatia, where he has established himself as a reliable and physically imposing presence in the heart of defense. Standing at 184cm tall, Mersinaj uses his height and strength effectively in aerial duels. His career stats highlight his defensive consistency, with numerous appearances in the Croatian First Football League. While his individual honors are still developing, his primary team achievement to date is helping NK Osijek maintain a strong position in the league and compete in European qualifiers. Known for his committed style of play, Mersinaj is a key figure for his club and continues to be a regular call-up for the Albanian national team, contributing to their defensive efforts in UEFA Nations League and European Championship qualifying campaigns.