BRITISH boxing legend David Haye has wished his son Cassius, 15, good luck as he looks to make his own way in a different sport.
Haye is one of just three fighters alongside Evander Hollyfield and Oleksandr Usyk who have won a title at both cruiserweight and heavyweight.
He memorably won the WBA heavyweight belt in 2009 when he beat the giant 7ft Russian Nikolai Valuev.
The two had a height difference of nine inches and Valuev weighed 45kg more than the Brit.
The boxer finally retired from boxing in 2018, a year after losing to Tony Bellew in the final fight of his career.
But rather than follow his father into the fight game, Cassius appears determined to make it in tennis.
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That's despite the fact that Cassius is named after Muhammad Ali.
Haye took to Instagram today to wish Cassisus an early happy birthday and good luck in his future tennis career.
He wrote alongside a picture of the two of them: "@mrcassiushaye developing into a fine young man!
"He’s 16 at the end of the month, I’m so proud of him following his tennis dream. 💥❤️🔥"
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Three years ago, when Cassius was just 13, he went on a "dream" tennis camp in order to work his way to becoming a pro.
But the plan for Cassius to make it in tennis goes back way further than that.
In 2016, when Cassius was just eight, Haye defended being a "pushy" parent and vowed that his son would become a tennis star.
Cassius is now a member of the International Tennis Federation (ITF) and playing the necessary matches towards turning pro.