"I'm @olympiaohanian's favorite player :)" Venus Williams jokingly wrote

Alexis Olympia is her mom and aunt’s No. 1 fan!

On Thursday, Serena Williams‘ daughter attended a tennis match alongside her dad Alexis Ohanian. While sitting in the stands on her father’s lap, the 15-month-old carefully watched as her mom and aunt Venus Williams competed against each other in an exhibition match in Abu Dhabi.

But Olympia — dressed to the nines in a Burberry dress — knew better than to pick sides, and proudly showed off her sportsmanship by clapping for both her mom and aunt at every point that was scored throughout the match.

In the adorable video shared by Ohanian, 35, on Friday, Olympia watches the game before smiling and clapping along with the crowd after one of the Williams sisters scores a point.

“👏🏻 @olympiaohanian is such a good sport she clapped for every point — whether it was mama @serenawilliams or auntie @venuswilliams,” Ohanian captioned the clip on Instagram.

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Aunt Venus, 38, also felt the love from her niece and reposted the sweet video to her Instagram Stories shortly afterward.

“I’m @olympiaohanian’s favorite player :)” she jokingly wrote over the clip.

Serena eventually lost the match, but later said during a press conference that her baby girl was the “highlight” of the match.

“That’s a classy baby, you know, she applauds both Mommy and my opponent who happened to be her auntie,” Serena, 37, said, according to Sport360. “That was the highlight, seeing her clap, it was so cute.”

Serena Williams Alexis OlympiaCredit: Venus Williams/Instagram
Venus Williams’ Instagram Stories
| Credit: Venus Williams/Instagram
Tennis, Abu Dhabi, United Arab Emirates - 27 Dec 2018
Venus (left) and Serena Williams at the match on Thursday
| Credit: Kamran Jebreili/AP/Shutterstock

Williams and Ohanian welcomed Olympia on Sept. 1, 2017. Following the birth, the athlete suffered a six-day battle with a pulmonary embolism that led to multiple surgeries and a handful of additional medical troubles.

Giving insight into life with their adorable daughter, the tennis champ recently revealed that little Olympia is a bundle of energy these days.

“She’s just insane. She’s everywhere. If she was out here, she would be over there,” Serena shared. “It’s so fun. I love her so much.”

In September, she opened up to PEOPLE about what it’s like to be a mom and also juggle multiple career obligations, explaining that while it can be challenging, that’s also what makes her life so enjoyable.

“It’s been so hard balancing being a mom and starting my clothing line, as well as playing a professional sport! However, it is the challenge that makes it fun,” she said at the time.

“I have spent every day with Olympia since she was born, and one of the latest challenges has been her teething,” added the star. “I’m sure a lot of parents can relate. A milestone has been her walking — I get a good workout chasing her around the house!”

Serena Williams and Alexis Olympia
| Credit: Serena Williams/Instagram

Thursday’s match was one of the few times that Serena and Venus have competed against each other.

Over the summer, Serena beat her older sister, 6-1, 6-2 in their highly anticipated matchup at the U.S. Open in Queens — their 30th head-to-head match since they first competed against each other 20 years ago.

“It’s not easy,” Serena later said of beating her sibling Venus. “She’s my best friend, she means the world to me. She’s so supportive of my career and I’m extremely supportive of her career and every time she loses I feel like I do.”

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“So yeah, it’s not very easy, but it’s a tournament and we all know that there’s more to life than just playing each other and playing tennis,” she added.

“I love her with all my heart. She’s the reason I’m here,” Serena also said of her sister, in her “best match” since welcoming her daughter. “She’s the only reason I’m still out here, so I really owe everything to her, to Jehovah of course, but after God, I definitely owe everything to her.”