Chelsea defender David Luiz had mixed emotions over his full debut in the draw at Fulham.
Luiz is still rocking from the last-minute penalty he conceded on his debut in Monday's 0-0 draw with Fulham.
The £21million new boy from Benfica admitted: "The penalty was an error and it was lucky Fulham did not score from it.
"Carlo Ancelotti congratulated me on my performance but I need to improve. The season here is long but I am determined to celebrate a Chelsea victory next time."
