A non-league side eliminating the European champions would send shockwaves throughout English football and the fact it could happen is perhaps the greatest example as to why this weekend of all weekends is so revered across the game on these shores.
Still, few would doubt the size of the task at hand for the away side.
With all due respect, even a hugely rotated Chelsea team should have more than enough to overcome Saturday’s opposition, such is the level of quality in Thomas Tuchel’s squad.
Where to watch Chelsea vs Chesterfield
TV channel: The game will be broadcast on BBC One (red button).
Live stream: Supporters will be able to watch the game either through the BBC iPlayer or the BBC Sport website.