Gylfi Sigurdsson says Swansea's game-plan worked perfectly against Liverpool
Swansea, who were bottom of the table going into the game, took a 2-0 lead through two Fernando Llorente goals before a Roberto Firmino brace pulled the hosts back.
But Sigurdsson was on hand to slot past Simon Mignolet in the 74th minute to cap off a frantic second half and deliver a severe title blow to Jurgen Klopp's side.
The Iceland international believes Paul Clement's game-plan was executed perfectly and has also singled-out Swansea's defence for praise.
Gylfi Sigurdsson scored Swansea's winner at Anfield
Sigurdsson told BT Sport: "After being 2-0 up and then going in to 2-2 it was a big disappointment.
"But even a point at Anfield is a very good result.
"It showed the character of the team to push up at the end and get the winning goal."
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Fernando Llorente scored Swansea's first two goals
On summer signing Llorente, Sigurdsson added: "The big man is very strong in the box.
"We need to get delivery in to him and he's good in the air.
"The work the team did defensively was outstanding and I think our game-plan worked perfectly."