Football players, not just Chelsea, may wear armbands for many different tragic events. They are predominately used as a sign of respect, many examples include ;
* The death of a former player / manager / member of the club, * The Hillsborough Disaster etc.
Chat with our AI personalities
'Applause pre-match in respect of Nick Broad, who worked in Chelsea's sports science department before he joined Carlo Ancelotti at PSG and was killed in a car accident. The Chelsea team and medical staff are in black armbands.'
Read more: http://www.dailymail.co.uk/sport/football/article-2264636/Chelsea-v-Arsenal-live.html#ixzz2IWoKyK4P
Follow us: @MailOnline on Twitter | DailyMail on Facebook
Its if some body famous has died then they'll wear them. So do the other leagues.