As of my knowledge cutoff in September 2021, the youngest player to captain a team in the English Premier League (EPL) is Everton's Phil Jagielka. Jagielka achieved this milestone on August 9, 2008, when he captained Everton at the age of 25 years and 223 days.
Phil Jagielka, a versatile English defender, joined Everton from Sheffield United in 2007. Known for his leadership qualities, determination, and versatility, Jagielka quickly established himself as a key figure in Everton's squad.
On the opening day of the 2008-2009 season, Everton faced Blackburn Rovers, and regular captain Phil Neville was unavailable due to injury. As a result, Jagielka was given the armband, making him the youngest player to captain a team in the history of the EPL at that time.
Jagielka's appointment as captain showcased the trust and respect he had earned from his teammates and the coaching staff. His performances on the pitch, as well as his professionalism and leadership off it, made him a suitable candidate for the captaincy.
Throughout his career at Everton, Jagielka continued to demonstrate his leadership qualities and commitment to the club. He served as Everton's captain on numerous occasions, helping guide the team through various campaigns in the Premier League and cup competitions.
It's important to note that records can be broken over time, and new players may emerge as younger captains in the EPL. Therefore, it's crucial to stay updated with the latest developments to ensure the accuracy of such records. However, as of my knowledge cutoff, Phil Jagielka holds the distinction of being the youngest player to captain a team in the EPL.