Roger Federer hoping wife Mirka's pregnancy is lucky charm for his career

Lucky number 13 for Roger Federer as the Swiss ace beat Russia's Teymuraz Gabashvili 6-2 6-2 6-3 on Saturday to reach the Australian Open fourth round for the 13th straight year.

The four-time winner at Melbourne is looking fresh and good. In his post match press conference, the dad of two who is expecting baby No3 with wife Mirka later this year spoke about his career and babies.

"The last time she was pregnant I played really well and won the French and Wimbledon," said Federer, 32.

The Swiss player who has 17 Grand Slams is seeking a record 18 title at this Grand Slam and seems to feel his wife's pregnancies are lucky for him.

The French Open which was elusive from the star tennis player's trophy collection was won when Mirka was expecting the couple's twin daughters. Let's wait and see if this pregnancy also is lucky for Federer as he has failed to win a Grand Slam in 2013.

Watch Roger Federer's post-match interview:

Great #Federer on court interview. Talks babies, winning & banter with #Courier: http://t.co/uGcdo53hIj #ausopen

— Australian Open (@AustralianOpen) January 18, 2014