It was a move from Thomas Tuchel that had worked before. In the European Super Cup final at the start of the season against Villarreal, the Chelsea manager had brought on Kepa Arrizabalaga for the penalty shootout. Arrizabalaga saved two and Chelsea won.
The goalkeeper had been the hero of two shootout victories earlier in this edition of the Carabao Cup, saving once apiece against Aston Villa and Southampton, having started both ties, and he even made a crucial penalty save in extra time to secure the 2-1 FA Cup win over Plymouth earlier this month.