Sunday was a very special day for Martina Hingis. The former No. 1 turned 38 years old and announced that she will be having a baby, her first with husband Harry Leeman.

The two tied the knot less than a year after Hingis retired as the world No. 1 in doubles at the end of 2017. During her illustrious career, Hingis won a total of 25 Grand Slams in singles, doubles and mixed doubles. After retiring from singles in 2008, Hingis returned to the tour as a doubles specialist and enjoyed tremendous success, winning 10 of her 25 Slams. 

Hingis isn't the only champion to announce baby news this week. Former No. 1 doubles player and 2017 Indian Wells champion Elena Vesnina is also expecting. 

Currently ranked No. 96 in singles and No. 10 in doubles, the 32-year-old hasn't played since the French Open. 

ATP Beijing & Tokyo (Sep. 30-Oct. 7)
- Tennis Channel PLUS has every ATP match live, from the first round to the final. Watch up to three courts from Beijing and two from Tokyo.