Bailey O'Neil is a 19-year-old Australian defender for Adelaide United, born on February 2, 2006, who is regarded as a valuable prospect with a market value of €25,000. O'Neil's career began in the youth systems of Australia, culminating in his development at the Adelaide United academy, a renowned pathway for A-League talent. As a defender, he likely made his senior or youth team debut for Adelaide, showcasing his defensive discipline and ability to contribute to build-up play. His key stats would include appearances for Adelaide United's youth team or first team in cup competitions, with highlights being his professional contract signing and solid defensive displays. Team honors at this early stage could involve youth league successes with Adelaide. A notable fact is his market valuation, which reflects his perceived potential within the Australian football landscape. In short, Bailey O'Neil is a promising Adelaide United defender whose career is on an upward trajectory as he aims to become a regular in the A-League.