I think we saw last night what we can do with the diamond. Relentless pressing and we looked alright, once our energy dropped we looked very vulnerable.
I can get using the diamond for periods of games. Starting that way last night, accepting an open game, end to end stuff, try to shock them and roll the dice. I can't understand continuing in that formation after our energy levels entirely predictably drops and the gaps in the diamond start opening up. Particularly when the roll of the dice had paid off, we got the lead, we had them where we wanted. Change it to something more solid, we had the players to do it.
One might say Pochettino got beat in the tactical, thinking, management aspect of the game. I think reality is he defeated himself. Kovac did basic stuff and Pochettino watched as the predictable became inevitable.