“So we decided yesterday to maybe switch to a back four and the guys were very open, very committed, very focused, to play like how we played,” Tuchel told chelseafc.com.
“So it’s good and it’s not fair to demand performances more or less out of nothing, like from Saul, Hakim and Malang.
“All three were outstanding today and that makes us very happy because it was a very deserved win in a big match against a very strong opponent.
“We could have created a bigger cushion, it was possible, we created a lot. We were very strong because it is so hard to create against Tottenham, which we saw over the last games.
“Especially in the second half we created a lot, and a lot of big chances to have the third or fourth goal.
“So now as everybody knows this is not decided and we have to arrive in full focus and top shape again because we need another 90 minutes of top quality football if we want to go through to Wembley.”
Chelsea will play guest to North London for a return leg at Tottenham’s stadium on January 12th as they look to reach the final of another competition under Thomas Tuchel.
The performances of players like Saul Niguez and Hakim Ziyech will be heartening for the German, who is now dealing with a few more absences within his squad.