Chelsea boss Frank Lampard blamed complacency after their FA Cup final defeat to Arsenal.

Arsenal won the FA Cup for the 14th time on Saturday by coming from behind against Chelsea, with Pierre-Emerick Aubameyang striking twice to cancel out Christian Pulisic's opener.

"We got complacent, took time on the ball like it was a stroll," Lampard told BBC One.

"We didn't play well enough to win a final. A lot of today is on us.

At the start of the second half, Pulisic picked up a similar injury, before midfielder Mateo Kovacic was sent off for two bookings and substitute Pedro dislocated his shoulder at the end of a costly evening.

"We started well for 10-15 minutes and we can only blame ourselves from that point," he said.

"A final can never be a stroll and we allowed them back into the game.

"We were slow, we played back on ourselves, invited pressure."