Roger Federer and wife Mirka welcomed twin boys on Tuesday. The couple already has four-year-old twin girls, and that got the oddsmakers over at Ladbrokes thinking.
The book is offering odds of 10,000 to 1 that the four Federer siblings will one day play in a mixed doubles final at Wimbledon.
Ladbrokes spokesperson Jessica Bridge told ESPN there hadn't been any action on the play as of Wednesday morning.
"Not too surprisingly we haven't seen a single bet yet as you're going to need to wait about 20 years to collect any winnings," she said.
Ladbrokes is also offering odds of 1,000 to 1 that the Federers will have a third set of twins.
