Conversation so far:
Was the Cardiff RFC professional?
Cardiff City Football Club is a professional association football club based in Cardiff, Wales.
How did it dawn a new era?
Their most recent season in the top flight was the 2018–19 Premier League season.
What else did Cardiff FC accomplish besides performing in the top flight in the 2018-2019 Premier League season?
The start of the 2017–18 season saw Cardiff break a club record by winning their opening three league games of a season, the first time.
How did people respond to the Cardiff club breaking a record? by winning hteir three opening games?
Despite the change in management, Cardiff were relegated to the Championship after a single season following a 3–0 away defeat to Newcastle United
What are some other interesting aspects about Cardiff FC besides breaking a club record in 2017-2018 and then being relegated following a defeat to New Castle United?
The 1926–27 season, when they finished in 14th position, was Cardiff's worst performance in the top tier of English Football

Question: Why was it the worst season?
Self-contained rewrite: Why was the 1926-1927 season for Cardiff FC the worst season?