A progressive manager is in danger of regressing. Mauricio Pochettino is in the worst run of his reign. For the first time since 2014, Tottenham have lost three consecutive games. They have not suffered four defeats in a row since 2004.
If plenty of Londoners deem a day out in Brighton a way to relax, for Tottenham it is an examination of their resolve, their powers of recovery and their much-praised manager alike.