John Hollins became the fourth member of the 400 club when we hosted Everton in a league match in January 1972 and he marked the occasion by converting a penalty in our 4-0 victory over the Merseysiders.
Unlike Bonetti, Harris and Hollins, Eddie McCreadie was not a product of our youth system but after he arrived from Scottish side East Stirlingshire in 1962 as a 22-year-old, he became a fixture at left-back and reached 400 in a 1-0 loss at Norwich in April 1973.
After McCreadie, it would be nearly two decades before John Bumstead became the next player to reach the landmark. The midfielder made his debut just days before his 20th birthday in 1978 and went through two relegations and two promotions with the Blues before playing his 400th game in a 1-1 draw at Norwich City in November 1990.
Kerry Dixon reached the landmark the following year but Chelsea’s third-highest all-time scorer was unable to add to his eventual tally of 193 goals as the Blues went down 2-0 at Notts County on Boxing Day 1991.