There was no pace, no dynamism, no real engine to their play. And it suddenly became clear to those who perhaps hadn't noticed before just how important Mason is to Mauricio Pochettino's style of play.
With his relentless work-rate and constant running on and off the ball, the 23-year-old is central to everything Tottenham are trying to be right now, even if his passing and shooting can be - and were - rather wasteful.
Benjamin Stambouli, on this occasion at least, was no adequate replacement and Mason's exploits are reminiscent of a certain Liverpool midfielder last season.
But, last season, when Henderson was out through injury or suspension, Liverpool felt it. And that was never more telling than when Brendan Rodgers' side crumbled at the end of the campaign with the Premier League title in reach.
Both Liverpool's Henderson and Tottenham's Mason never stop running and, at their best, are integral to their managers' plans.
Pochettino said yesterday that 23-year-old Mason's injury was not too bad and Spurs fans will certainly hope that proves to be the case. For there was a clear difference between the north London side with and without the midfielder yesterday afternoon.