The 41-year-old Swiss featured alongside long-time rival and friend Rafael Nadal for Team Europe in the closing match of the opening day at the O2 Arena, narrowly losing to American duo Jack Sock and Frances Tiafoe of Team World in a thrilling doubles encounter.
Federer's announcement last week that this match would be the last of his glittering career ensured that the occasion became one of the most hotly-anticipated events in recent memory, and man of the hour visibly enjoyed his grand farewell despite ultimately ending up on the losing side.