Riyad Mahrez scored the first hat-trick in an FA Cup semi-final since 1958 as Manchester City kept their quest for the Treble on course by outclassing Sheffield United at Wembley.

The Blades battled gamely throughout and even missed a big early chance when Iliman Ndiaye saw his shot saved by Stefan Ortega but once Mahrez scored his first from the spot two minutes before half-time, City made their class count.

The Algerian opened the scoring after Daniel Jebbison fouled Bernardo Silva, before taking advantage of a wide-open Sheffield United defense to score the second with a solo effort just after the hour.

Mahrez then got his third – the first in a semi-final in this competition since Alex Dawson achieved the feat for Manchester United in 1958 – when he swept Jack Grealish’s cross past Wes Foderingham after 66 minutes.

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It gave City manager Pep Guardiola the luxury of taking off key men such as Erling Haaland, Grealish, Bernardo Silva, and Ilkay Gundogan in readiness for what is shaping up as a defining Premier League title meeting with current leaders Arsenal at Etihad Stadium on Wednesday.

City and Guardiola have had a highly satisfactory week after reaching the Champions League semi-final, setting up an FA Cup final with either Brighton or Manchester United, and seeing main rivals Arsenal drop points in the league.