PHOTO COURTESY: TWITTER/ATLETICO MADRID
Playing in front of a sparsely populated Wanda Metropolitano, it took dominant Atletico until the 57th minute to extend their 4-0 first leg lead, Yannick Carrasco meeting Diego Costa's cutback and slotting home the opener.
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Kevin Gameiro tapped in the second 17 minutes later after a neat burst into the box from Angel Correa, and Vitolo made it three nine minutes from the end, racing through and crashing home his first Atletico goal to complete a 7-0 aggregate victory.
Argentine forward Vietto ended a long goal drought in spectacular style less than a week after arriving at Valencia on loan from Atletico, as Las Palmas were dispatched 4-0.
Following a 1-1 draw in the opening leg, Vietto put Valencia ahead at the Mestalla with his first competitive goal since December 2016.
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The 24-year-old, who found himself relegated down the pecking order at Atletico after Costa's return to the club from Chelsea, struck again shortly after half-time before Nemanja Maksimovic added a third.
Vietto sealed the rout and a 5-1 aggregate win midway through the second half with a stunning 50-yard strike after spotting Las Palmas goalkeeper Raul Lizoain well off his line.
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