West Ham United won at Chelsea for the first time since September 2002 with a heroic performance at Stamford Bridge on Saturday afternoon.
Aaron Cresswell was the match-winner, David Martin kept a clean sheet on his debut and the Hammers produced a hard-working, resilient and outstanding all-round performance to end a run of seven Premier League matches without a win.
Relive the big moments of a big win in pictures here.
