is it also used for racing?
Yes, greyhound racing but was cancelled later.
Stamford Bridge (stadium)
The Greyhound Racing Association (GRA) brought greyhound racing to Stamford Bridge on 31 July 1933 and this forced the London Athletic Club to leave the venue. Totalisator turnover in 1946 was nearly £6 million (£5,749,592); to put this in perspective to football, the British transfer record at the same time in 1946 was £14,500.

On 1 August 1968 the GRA closed Stamford Bridge to greyhound racing quoting the fact that Stamford Bridge had to race on the same days as White City
who have chelsea got in the fa cup UNANSWERABLE is this a club? Yes, an English professional football club does it have its own stadium? Yes, Stamford Bridge who formed this club? Gus Mears can you mention any match that this club may have played? Premier League when was this league started? 20 February 1992 who are its sponsors? Carling brewery and Barclays Bank PLC can you name any top scorer of this league? Former Blackburn Rovers and Newcastle United striker Alan Shearer who are the rivals of the above club? Arsenal, Tottenham Hotspur and Manchester United. does it have any women team as well? Yes,  Chelsea Football Club Women the stadium that this club uses for playing; does it have any other use? Stamford Bridge has also hosted a variety of other sporting events since Chelsea have occupied the ground. In October 1905 it hosted a rugby union match between the All Blacks and Middlesex, and in 1914 hosted a baseball match between the touring New York Giants and the Chicago White Sox.
wiki:20155055
Stamford Bridge (stadium) [SEP] Greyhound racing
The Greyhound Racing Association (GRA) brought greyhound racing to Stamford Bridge on 31 July 1933 and this forced the London Athletic Club to leave the venue. Totalisator turnover in 1946 was nearly £6 million (£5,749,592); to put this in perspective to football, the British transfer record at the same time in 1946 was £14,500. On 1 August 1968 the GRA closed Stamford Bridge to greyhound racing quoting the fact that Stamford Bridge had to race on the same days as White City. An attempt by Chelsea to bring back greyhound racing to Stamford Bridge in 1976, to alleviate debts, failed when the GRA refused them permission to do so.