Alexis Sanchez inspired Chile to a hard-fought win over Cameroon in Group B of the FIFA 2017 Confederations Cup.
La Roja saw an Edu Vargas opener chalked off for offside via the Video Assistant Referee to the fury of Bayern star Vidal.
Alexis Sanchez was then brought on and made the difference, adding energy and confidence moving forward for Juan Antonio Pizzi's side.
The Arsenal star, who started on the bench due to an ankle knock, set up Vidal to break the hearts of the Indomitable Lions 10 minutes from time.
It ensured little controversy after Chile dominated the game but had Vargas' goal disallowed by the VAR.
Vidal slid in Vargas, who lifted the ball past Fabrice Ondoa and into the back of the net, before a whistle suspended any celebrations - as was the case in the earlier game between Portugal and Mexico.
Referee Damir Skomina went upstairs to check and it was rightly chalked off, with the naked eye unable to tell with any certainty live.
Sanchez almost doubled the lead in the closing stages, rounding the goalkeeper and having his effort towards the empty net blocked before Vargas gobbled up the rebound to put some gloss on the score line.
The Copa America champions will now face World Cup winners Germany in a mouth-watering game on Thursday June 22.