Ajax are the typical underdog team that does well but flops come semi-final/final (See Leeds Utd in 2001,Monaco in 2004 and us two years later).
If Spurs go through today then they are two games away from winning the CL, that thought is unimaginable.
Only positive of Spurs going through today is that hopefully they will take their eye off the league and we can capitalise.
Having said that, I am still confident City will have too much for them.