Olivier Giroud scored his first Chelsea goal as Antonio Conte's side completed a 4-0 victory over Hull in their FA Cup fifth-round match.
The former Arsenal striker produced a neat close-range finish from Emerson Palmieri's low cross from the left to net Chelsea's fourth goal in the 42nd minute.
Giroud moved to Stamford Bridge on transfer deadline day and opened his account in his third game for the club. Chelsea's other goals before the break came from Willian, who netted twice, and Pedro.
Hull's David Meyler had a 51st-minute penalty saved by Willy Caballero as the visitors were denied a consolation goal in the second half, Chelsea settling for a 4-0 victory.