Fernando Llorente responded to being dropped by Bob Bradley by scoring two stoppage-time goals to seal a 5-4 win over Crystal Palace.
The former Spain international, who was signed by Francesco Guidolin in the summer, was left out of the starting line-up for the 1-1 draw with Everton last weekend.
Bradley insisted Llorente still has a future in south Wales despite his omission against the Toffees, but again put Llorente among his substitutes for the visit of Palace on Saturday.
Stand-in striker Gylfi Sigurdsson levelled after Palace took control in the first-half through Wilfired Zaha's goal but, yet to win as the club's manager, Bradley sent on Llorente in search of a winner.
The ex-Juventus striker had an immediate impact, having a hand in both of Leroy Fer's goals as the home side raced into a 3-1 lead shortly into the second half.
And after Palace turned the game on its head with three comeback goals to lead 4-3 with just six minutes of time remaining, Llorente "showed what he can really do" - as Bradley said after the match.
The 31-year-old netted twice in added time to deliver Swansea's first top-flight win since the Premier League campaign's opening weekend.
Watch Llorente's late brace in Swansea's thrilling win in the video above.
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