Chelsea midfielder Frank Lampard admits he was delighted with his four-goal haul against Derby County this week.

Lampard became the first Chelsea player to score four goals in a game since Jimmy Floyd Hasselbaink eight years ago.

The player's goal return from midfield has been phenomenal but he admits he found it hard to hit the net when he first arrived from West Ham as a replacement for crowd favourite Gus Poyet.

"It was a difficult first season when I arrived but there were a few goals that were important to me," said Lampard.

"Looking back it was a great building block to get me where I am now.

"When I signed I knew I needed to score goals for the club and it was a nice pressure to have as I think it spurred me on a little bit.

"My first couple of seasons were a bit quiet on the goal front but the last few have been very prolific.

"I was out in Wimbledon with some friends shortly after joining the club when some Chelsea supporters recognised me. They started asking me how many goals I was going to score for the club and if I thought I could do well at Stamford Bridge.

"Of course I was confident and told the fans they wouldn't be disappointed but I never expected to get 100 goals during my time here.

"I think it has been made easier because I have had the fans behind me from day one.

"They have always supported me and it's been excellent. We have a special relationship and it is something I appreciate.

"It's the first time I've scored four at the top level and it feels very nice to do it - especially from midfield."