Ekaterina Alexandrova stuns Aryna Sabalenka in world No. 1's first match since Australian Open final

It's simply one of the most adorable things you'll see this week. Novak Djokovic, celebrating son Stefan's first birthday, attempts to twist a balloon animal (a dog) to entertain the tyke. He finishes fashioning the green toy, he walks it toward the little lad, and he "barks" at the boy. Stefan replies in kind, in his own way.

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Preparing for Stefan's bday. I wanted to be full on daddy and bring out all the tricks :) my dog balloon was not such a success but as I said, it is always important to give it a try :) it's been an amazing year with lots of travel but this is the place I always come back to, and always want to be. Home with my wife and son and dogs #familytime #happymoments U pripremama za Stefanov rođendan tata mora da bude i mađioničar :) znam da nije najsavršenija kuca od balona, ali važno je da sam se potrudio, zar ne? :) Ovo je do sada bila neverovatna godina. Toliko pređenih meridijana, ali na kraju dana moje omiljeno mesto je topli dom pored Jelene, našeg divnog dečaka i naših ljubimaca :)
Posted by Novak Djokovic on Tuesday, October 20, 2015

Your loyal Spin keeper is not given to using the word "cute," but that's exactly what this is. Jelena Ristic, mother of this delightful blond fellow, remains unseen in the nearly 30-second clip; she may be waiting in the wings, she may be doing her thing, or she may be off running the Novak Djokovic Foundation. Who's to say with this globe-trotting team of doers?

Always one to make his voice heard, Djoko-coach Boris Becker delivered his one-year salutation to young Stefan as well. The verbal gesture was kindly received by his charge, the ATP World Tour's far-and-away No. 1 star.

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We all thank you for your good wishes https://t.co/2t3nkn0tky
— Novak Djokovic (@DjokerNole) October 22, 2015

Still, Becker's ever-present social media personality can't match the picture-says-a-thousand-words beauty that is being a Djokovic these days.

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A post shared by Novak Djokovic (@djokernole)

Follow Jon on Twitter @jonscott9. News tips gladly accepted. Serving tips kindly refused.

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