Eric Dier became the first Tottenham Hotspur player to discover Jose Mourinho's ruthless streak as the Portuguese manager's decision to haul off the midfielder after half an hour ultimately proved a masterstroke in Tuesday's 4-2 win over Olympiakos.
Mourinho's first home game in charge after replacing Mauricio Pochettino was turning ugly as the Greek side led 2-0 inside 20 minutes of the Champions League Group B game.
But two-time UCL winner Mourinho acted decisively, sacrificing Dier's defensive shield, and sent on Danish playmaker Christian Eriksen who, just as on Saturday in Mourinho's debut win over West Ham United, had been left on the bench.