Matt Giteau's newborn Levi has impeccable sporting genes, but he may have to compete with his unborn cousin for future accolades.
The former Brumby's older sister Kristy is pregnant, and is due to welcome her first bundle of joy into the world in July.
The father is Canberra Royals No.8 Soakai Tai, a hulking Tongan who won the John I Dent Cup's player of the season.
On face value, they're the classic 'ying and yang' couple.
Tai measures nearly two metres, and is so shy he barely uttered a word collecting his award last year.
The effervescent Giteau is more than 30cm shorter, and is probably capable of talking underwater.
''My specialist told me the largest baby she's delivered was 14 pounds for Tongan parents, which was not the most comforting story to hear,'' Giteau laughed this week.
''We actually met in the Brumbies' gym. I was training for the Wallaroos and he was with the Brumbies Academy, and it went from there.
''We've been together for about a year. I'm a bit of a talker, and he's a very good listener.''
Despite starting a family, speedy winger Giteau is intent on helping Australia defend its World Sevens title at Moscow next year.
The sport has also been inducted into the Olympic schedule from 2016, but the 30-year-old is unsure whether she'll set her sights on Rio de Janeiro.
''Obviously my priorities may change post-birth and there might be a few things I value more, but at the moment I'm still training in moderation and keeping in the loop,'' Giteau said.
''I'm following the maternity program the Wallaroos' coach has sent out, and it gives me nine months to get my fitness back and go to the World Cup.''
Kristy has regularly been in contact with Matt and his wife Bianca, a professional netballer, for tips in preparation for the day her life changes forever.
Matt is currently playing in France for Toulon, and their Skype sessions have given his sister a taste of the joys of becoming a parent.
''In the Skype sessions he's heavily whipped, the baby's got him wrapped around his little finger,'' Kristy laughed.
''He just said it's amazing and it's the best thing that's happened to him.
''It would be nicer if he was closer, and I could get some real hands-on experience with a newborn.''
Australian women's rugby has turned its main focus to sevens to ensure it's an Olympic contender in four years' time.
Giteau remains actively involved in luring players to the code through 'come and try' days, and will attend today's Queanbeyan Sevens to scout potential talent.
''The emphasis is on Olympics, so they're putting in place some more formalised sevens competitions,'' Giteau said.
''At a national level they've identified a squad which will train for international tournaments and try and defend our world title.''