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Callum Smith v Saul 'Canelo' Alvarez: BBC Radio 5 Live to offer fight commentary

Liam Smith was beaten in nine rounds by Canelo in September 2016

The highly-anticipated world super-middleweight title contest between Callum Smith and Saul 'Canelo' Alvarez will be broadcast by BBC Radio 5 Live.

Britain's Smith, 30, takes on the decorated Mexican in Texas on Saturday - a bout set to begin at around 04:15 GMT in the UK on Sunday morning.

Smith's WBA world super-middleweight title and the vacant WBC belt are on the line at San Antonio's Alamodome.

BBC Radio 5 Live's Mike Costello will provide commentary from 04:00 GMT.

Costello will be ed by 5 Live Boxing analyst Steve Bunce and former world super-middleweight champion George Groves, who Smith beat to capture his title in 2018.

"There are unknown factors on both sides," said Costello. "How much more is there to come from Callum Smith?

"For Canelo. He's 30. For half of his life he has been a professional boxer. How much of Canelo is left? He's been out of the ring a year. Has that allowed him to refresh">