During the shootout, Alvarez slipped and the VAR spotted that his left foot touched the ball slightly before he kicked it with his right. With only one touch permitted, the penalty, which would have levelled the shootout at 2-2, was chalked off.

Atletico Madrid and Real Madrid face off again tonight at the Metropolitano for the second leg of their Champions League last-16 tie, with Los Blancos holding a 2-1 advantage after a thrilling first-leg encounter.

Champions Los Blancos hold a 2-1 first leg lead ahead of their visit to city rivals Atletico's Metropolitano stadium.

Los Blancos host their city rivals on Tuesday in the first leg before visiting Atletico next week at the Metropolitano stadium.

Atletico Madrid coach Diego Simeone admitted city rivals Real have the more illustrious history but backed his own team to deliver.

Real Madrid, without injured star striker Kylian Mbappe, largely kept Atletico at arm's length on a spiky night in the Spanish capital, taking the lead through Eder Militao midway through the second half. The match was suspended for around 15 minutes soon afterwards when Atletico fans threw objects including lighters at Madrid players, and Rojiblancos midfielder Marcos Llorente was sent off at the death.