Porto goalkeeper Iker Casillas was left frustrated by a number of refereeing decisions in the aftermath of his side's 2-0 defeat to Liverpool in their Champions League quarter-final first leg clash.
The 37-year-old, who continues to perform well at the highest level after 20 years at the top of the game, highlighted a poor challenge from
Soy 100 por 100 optimista!! Teniendo en cuenta los resultados de octavos de @ChampionsLeague no podemos pensar que la eliminatoria está perdida. Falta el juego en Dragao y vamos a luchar por pasar a las semifinales. Gracias a todos los portistas por el apoyo en Liverpool!! pic.twitter.com/3w1xst6ULP— Iker Casillas (@IkerCasillas) April 9, 2019
The decisions indirectly cost Porto, as they suffered a 2-0 defeat
Following significant calls on social media for Salah to have seen red, former Premier League referee Mark Clattenburg spoke to the Daily Mail about the decision, saying: "
"The VAR should have sent the referee to the review area, where I am sure he would have decided that Salah should be sent off."
Despite Salah's poor challenge, the Liverpool forward will be eligible to play against Porto in the next leg of the UCL quarter-finals on Wednesday 17 April.