Tottenham manager Jose Mourinho says Chelsea were superior on Sunday, pointing to Frank Lampard's decision to revert to a three-man defence.
The Portuguese has enjoyed a positive start to life with Spurs but his only two Premier League defeats have come against his two former clubs; Manchester United and Chelsea.
Mourinho had never lost a home match against a previous club in any competition, winning 12 and drawing one, but his former midfielder Frank Lampard totally outwitted his old mentor in a game marred by alleged racist abuse towards Antonio Rudiger.
"They were better than us in the first half. It is not difficult for me to admit it," Mourinho told reporters.
"They played in a system they are very comfortable with. A system they played for two years with Antonio Conte. Lots of their players are very comfortable with it.
"It's easy for me to admit they were superior. But you look to the goals and they are not a consequence of any superiority.
"The first goal is a short corner with a big mistake. We know how to defend short corners, we train how to deal with short corners. The players involved were not focused."
Additional reporting by Reuters.
