2013–14 Professional U21 Development League

League 1 had a new format, with the three groups system being abandoned in favour of a single league system with the teams finishing in the top four positions qualifying for a playoff stage.

Having played each other once, either home or away, the top four teams in the table progressed to the knockout stage to determine the overall winner.

On 14 May, Chelsea defeated Manchester United in the final to claim the Under-21 Premier League title.

Barnet dropped out of the league after one season, Colchester United briefly dropped to Category Three Academy[5] and would return the next season,[6] Wigan Athletic would also drop to Category Three Academy, while Leicester City joined the Premier League 2 as a Category One Academy after one season on July 4.

[7] Having played each other home and away, the top two teams from each division progressed to the knockout stage to determine the overall winner.