Chelsea's development squad competes in the Premier League 2, the Checkatrade Trophy and the Premier League International Cup...
Chelsea's development squad, Under-19s (in some seasons) and Under-18s make up the later stages of the development process for young players at the club.
All three teams are the responsibility of the Chelsea Academy which will have nutured some of the players involved from ages as young as eight or nine.
The competitions contested are distinct with some involving clubs from across Europe. Chelsea's players may move between the age squads during the course of a season which tests them against older opponents.
Find out more details about each age group below...