Chelsea boss Thomas Tuchel was full of praise for forwards Timo Werner and Romelu Lukaku.
The German and Belgian have been out of favor in recent months, finding themselves on the bench for key matches.
However, they started in the FA Cup against Luton on Wednesday, and helped the Blues fight back from 1-0 and then 2-1 down to win the game 3-2.
Saul Niguez, Werner, and Lukaku got the goals that move Chelsea into the quarter-finals.
"Timo played very well, I'm happy for that, and Romelu got his goal," said Tuchel post-game, per the club website.
"That's why we left them on the pitch. At the moment this is the most important match for them, even if they maybe think they should have played this match or that match.
"We want them to play with full focus and take this seriously because this is where you grow your confidence."