The Duke and Duchess of Cambridge are known for being fiercely competitive - especially against each other.
And the royal couple will be going head-to-head for household bragging rights during their next outing together.
They're set to be in the stands when England take on Wales in Saturday's Six Nations rugby match, which takes place at Twickenham.
Of course, William is the patron of the Welsh Rugby Union, while earlier month, Kate was unveiled as the new patron of the English Rugby Football Union.
During their trip to Twickenham the royal couple will meet with the presidents of both the Welsh Rugby Union and the Rugby Football Union.
They'll also speak to volunteers involved in the RFU's community game and RFU council members.
The role of patron of the RFU was previously held by Prince Harry, who left the job vacant when he and Meghan Markle quit as senior working royals.
Kate had been tipped to take on both jobs and confirmed her new duties in a video earlier this month, which showed spinning a rugby ball on her finger.
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She later showed off her rugby skills and was even lifted up in a lineout during a training session at Twickenham.
It led to her even getting approval from Royal Family member and ex-rugby player Mike Tindall, who admitted she looked effortless in the session.
Speaking on his hugely successful podcast The Good, The Bad and The Rugby, Mike admitted: "I text Ellis and said ‘mate, please tell me anything she messed up on’ so I could sort of, family WhatsApp group, get into her.
“And he said ‘No she was actually pretty good, and she was really good at kicking’ and I was like…”
Mike proceeded to give a large sigh and added: "But she has this competitive nature where she has to be good at things.”
His co-presenter Alex Payne agreed, saying: “She looked unbelievably natural.”
And Mike added: "Just imagine, anyone who’s ever tried it, getting thrown up in the line-out if you’ve never done it before is not easy because normally, you’ll kick the prop in either the nuts or the face as he’s lifting you and she just looked effortless.”
The ex-player also joked: “The best thing is when it rolls to England and Wales, we get the battle of the Cambridges.”
