"The story behind Roger Federer's knee injury made me go 'ohhhh'."

I’ve never gone for bad boys. Maybe that’s why I love watching Roger Federer play tennis.

I love his one-handed backhand and how it looks like a delicate ballet move. I love the way he places the ball around the court and uses strategy and skill over sheer brutal power. I love the way he treats the ball boys and girls. I even love the way he blows into his blistered hands as he waits for his opponent’s serve.

The Swiss tennis legend is back playing the Australian Open in Melbourne after six months out with a knee injury, and many have written the 35-year-old off. He’s ‘too old’, his ‘best days are behind him’, it’s ‘time to retire’. Move on Roger.

When I heard why Federer had been out with injury I was in a room full of women. The Australian Open was on the TV in the background. We were having a glass of wine and talking. Kids were in and out of the room asking what the score was. It felt like summer.

After a beautiful one-handed backhand from Federer (my brother told me he is one of the last remaining one-handed backhander on the men's tour - of course he is), the commentators recounted the Federer injury story.

"He was running a bath for his twins, that's how he injured his knee."

Every woman in the room turned to the TV and went, "Ohhhh."

Then we told each other the same story as though we hadn't heard the commentators say it.

He was running a bath for his twins. Federer and his wife, Miroslava (Mirka) a former professional tennis player, have two sets of twins: Lenny and Leo, aged two and Myla and Charlene, seven.

Of course the man who is regarded as having one of those rare bullet-proof athletic bodies injured himself by doing such a mundane domestic task as running a bath. And yes, I know women do this ALL THE TIME. But it's such a lovely visual image to have (along with the most graceful backhand).

Federer makes a living doing something he is great at and is supported by a team of people. But he also, from what I've seen, treats people on and off the court with respect.

He stops for other people's selfies. He takes the time to autograph a nine-year-old's hat. He doesn't mumble at a press conference or blame others for his failings. He doesn't yell at his box during a game (in fact he apparently looks to his box the least of any player). He doesn't stop trying when it looks as though there is no way he can win. He is positive, talented and aware. You get the feeling he knows how privileged he is to be living his life.

Until May last year, Federer had played in 65 successive majors - and won a record breaking 17 Grand Slams. The last time he was absent from a Grand Slam (Australian Open, Wimbledon, the French Open and US Open), was in 1999.

Now, he's made the final of the Australian Open against Rafael Nadal.

Listen: The reality of raising two sets of twins on I don't know how she does it. (Post continues below)

Maybe he will win.

Maybe he will lose (I hope not).

What I do know is that I will be watching him whatever he does, and so will my kids, because Federer is simply a beautiful tennis player to watch when he is winning. The placement. The strength. The grace.

And he's a beautiful teacher to watch when he's losing, too. The dignity. The strength. The grace. The dodgy knee from running his kids a bath.