CORONATION Street fans have been left stunned after discovering star Jude Riordan’s brother has a secret role on the soap.

The actor – who plays Nick Tilsley’s son Sam Blakeman in the ITV soap – has become a fan favourite after joining the soap more than a year ago.

Sam’s mum Natasha was brutally killed last year leaving Sam to be raised by his father.

Viewers have watched him recently become a chess prodigy with the help of Roy Cropper.

And in last night’s episode he entered a chess tournament in the Bistro and faced off against other teen opponents.

There was joy all round as Nick proudly watched his son beat another player called Oscar.

However actor Jude’s parents have revealed the opponent Oscar isn’t a stranger – instead he was played by someone very close to Jude.

They revealed that Oscar was played by Jude’s elder brother Zach.

They posted: "When it was bring your Brother to work day.

“Sam smashed Oscar out of the bistro. BEST DAY so far @itvcorrie #bubblebrothers #samvoscar #corrie."

Corrie fans were stunned by the reveal.

One wrote: "Ah wow it was your brother that's amazing."

A second said: "Love it."

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Another added: "So glad Sam won yippee! Didn't realise that was your brother how cool is that taken your brother to work."

A fourth said: "That's so lovely."