It turns out Novak Djokovic had some extra help in his straight sets dismantling of Milos Raonic in the quarterfinals of the Australian Open.

During Djokovic's match, his wife Jelena posted this adorable photo of the couple's infant son, Stefan:

Djokovic was asked about Stefan after the match, and while he said he didn't know the youngster was watching him, he did feel positive vibes from his boy:

"See how he enjoys watching TV?" Djokovic joked. "He's daddy's boy definitely. I didn't know he was watching me this way, but I felt his energy. So that helped me tonight, definitely."

Stefan is just three months old, so he probably wasn't able to stay awake for the entirety of the match. But there wasn't much to see -- Djokovic easily took care of Raonic and advanced to his 25th Grand Slam semifinal. The 27-year-old will take on 2014 Australian Open champ Stan Wawrinka.

Novak and Jelena were married in July 2014, and Stefan was born in October.

Happy New 2015!!! May all your wishes come true. Lots of love, health, success and happiness to you and your loved ones!

A photo posted by Novak Djokovic (@djokernole) on

More Djokovic: Balancing U.S. Open Title Run With Wife's Pregnancy At Home

Youngest Grand Slam Tennis Champions


Australian Open, Women

Martina Hingis, 1997, 16 years, 3 months.


Australian Open, Men

Mats Wilander, 1983, 19 years, 3 months.


French Open, Women

Monica Seles, 1990, 16 years, 6 months.


French Open, Men

Michael Chang, 1989, 17 years, 3 months.


Wimbledon, Women

Martina Hingis, 1997, 16 years, 9 months.


Wimbledon, Men

Boris Becker, 1985, 17 years, 7 months.


U.S. Open, Women

Tracy Austin, 1979, 16 years, 8 months


U.S. Open, Men

Pete Sampras, 1990, 19 years, 0 months

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