Claim: İdman Ocağı won the most championships in the Trabzon Football League, founded as a regional football league for Trabzon based clubs in 1922.
Evidence: Trabzon İdman Ocağı are the most successful club in the history of the league, holding the record with 12 championship titles. The Trabzon Football League (Turkish: Trabzon Futbol Ligi) was founded as a regional football league for Trabzon based clubs in 1922.