Sibling rivalry: Do you enjoy beating your sibling at sport?

When Adam Yates won stage one of the Tour de France in Bilbao, Spain, this weekend he not only got the leader's yellow jersey but also beat someone he had ridden with dozens of times - his twin brother Simon.

The two brothers were on different teams, but when Adam and Simon found themselves ahead of the rest of the riders they rode together.

The twins took it in turns at the lead, but Adam was stronger winning just 4 seconds ahead of his brother.

Simon, had mixed feelings about his brother's win: "I'm happy for him, but I'm disappointed."

Can you understand how he feels? Do you love getting a victory over your sibling or do you like to see them win - even if they beat you?

Let us know in our vote and in the comments below.

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Win for a twin in the Tour de France

"It's super special to me, a one-two in the Tour de France for brothers, not many people can say they've done it, it was nice we did it," Adam told a news conference.

"It's super nice to share this with him."

"There was a bit of cat and mouse over the top, and Adam rolled to the front," Simon said.

So what do you think, if you're competing against a sibling or best mate, does family and loyalty come first? Or is it win at all costs?