With plenty of football to play before now and the end of the season, the top Premier League clubs will need to dig deep to stay in the hunt for major trophies. But which of them has the best reserve list to call upon outside the starting XI?
Here, ESPN FC's club correspondents report on their clubs' squad depth.
CHELSEA Second XI: Caballero, Zappacosta, Rudiger, Christensen, Clarke-Salter, Kenedy, Drinkwater, Fabregas, Musonda, Batshuayi, Willian.
By replacing Asmir Begovic with Willy Caballero, Chelsea managed to maintain their status of having arguably the Premier League's best backup goalkeeper.