Gylfi Sigurdsson's winner helped Swansea City climb off the bottom of the Premier League table with a thrilling win at Anfield that also dealt a massive blow to Liverpool's title ambitions.
After a goalless first half, Fernando Llorente's double sent Swansea into an unexpected 2-0 lead early in the second period before Roberto Firmino scored twice himself to haul Jurgen Klopp's side level.
Then, with Liverpool having made two attacking substitutions, Swansea struck at the other end with Sigurdsson benefitting from a misplaced challenge from Ragnar Klavan.
The result left Liverpool seven points behind leaders Chelsea who can extend the gap to 10 against Hull City on Sunday.