In the wake of the hubbub at Ibrox on Thursday, when Rangers mostly out-played, completely out-fought and almost out-scored Tottenham, Nicolas Raskin, was the subject of many conversations.
The 23-year-old Belgian's recent performances had strongly suggested that he had turned a corner in his fitness and his effectiveness in the Rangers midfield, but the biggest test of that was against a cast of Premier League midfielders brought to Tottenham for a collective spend of nearly £180m.
Raskin passed the examination with aplomb. His intensity, influence and work-rate were at the heart of a driven Rangers. They were up for the fight in a way that the day-trippers from down south were not. Raskin was the best player on the park.
Despite Tottenham's illustrious reputation, Thursday can only really be seen as a warm-up act to the main event, Sunday's League Cup final against Celtic.
Raskin did it against Yves Bissouma, Rodrigo Bentancur and James Maddison. Now he has to do it against Callum McGregor, a feat that has proved way beyond any Rangers man for much of the last three years.
McGregor has hardly operated alone in this period of dominance. Recurring themes are everywhere - Daizen Maeda skinning James Tavernier, Kyogo Furuhashi outfoxing Rangers defenders at one end and Cameron Carter-Vickers bringing authority at the other.
Rangers are emerging from an unhappy spell and are currently nine games unbeaten. Raskin's graft and 22-year-old Hamza Igamane's goals have helped brighten Rangers' world.
But we have been in this place before. In the last three seasons, Rangers have gone into Old Firm games on the back of unbeaten runs of eight, nine, 13, 14 and 14 games only to run into a Celtic wall.
Celtic are better than the version of Spurs that appeared at Ibrox. As enthused as he was by his team's spirit, that fact will not be lost on Philippe Clement. He is hard-bitten by reality in these games, after all. He bears the scars of battle with Brendan Rodgers' team - five games, four defeats, one draw, which he claimed as a moral victory. Nice try, Philippe.
Rodgers, by comparison, has lost one game against Rangers in 19. Rangers have not scored against Celtic in almost four hours of football. Rangers have not led Celtic in any game, league or cup, in nine hours, a run that stretches back to Michael Beale's time in charge.