Is "Law & Order: SVU" star Mariska Hargitay Hollywood's biggest tennis fan?

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Dun, dun! Is "Law & Order: SVU" star Mariska Hargitay Hollywood's biggest tennis fan? This week, the jury reached a verdict ... and it's a resounding yes.

Still need convincing? You won't after seeing our evidence.

Exhibit A

The actress, who's starred on the police procedural as NYPD detective Olivia Benson on NBC for 24 seasons, took to social media this week to congratulate her nephew Henry von der Schulenburg for winning the gold medal at the FISU World University Games.

Von der Schulenburg, who hails from Zurich, is a rising senior at Harvard University, where he studies applied math and economics.

The FISU World University Games are open to university students from around the world, have winter and summer editions, and are held every two years. This year's summer edition was held in Chengdu, China from July 28 through Aug. 8, and was, in fact, the expected 2021 edition; twice postponed as a result of the COVID-19 pandemic, more than 5,000 athletes eventually competed two years later, and von der Schulenburg took home one of Switzerland's two gold medals.

“Crazy Huge and Amazed Congratulations to our nephew @henry_vds !!!!," Hargitay wrote on Instagram, accompanying a photo of his winning moment that even an amateur detective could deduce was captured from a live stream.

"Just beyond proud. And we have the same birthday!! Does that mean I’m awesome too? Sort of? CONGRATULATIONS!!!!! WE LOVE YOU.”

Exhibit B

But Hargitay's tennis fandom doesn't just stem from her family ties. The Emmy Award-winner is a noted fan of the professional game, too, and is frequently a famous face in the crowd at the US Open with her husband, fellow "SVU" actor Peter Hermann.

Last year, she performed a pre-match coin toss during Laver Cup at the O2 Arena, and was in the house for Roger Federer's final match.

"So honored to do the coin toss at @lavercup 2022!" she wrote on Instagram at the time. "Still recovering from saying farewell to the GOAT @rogerfederer on Friday night. We love you Roger!"

Exhibit C

This spring, Hargitay also visited the other home of American tennis, the USTA National Campus in Orlando, Fla., to watch her other nephew, Jeffrey von der Schulenburg, win another Division I NCAA men's team title with the University of Virginia.

The von der Schulenburg brothers, in fact, took home three medals from Chengdu, making the family responsible for nearly half of Switzerland's seven in total.

In addition to Henry von der Schulenburg's gold medal in singles, they earned silver in the team event alongside Jonas Schär, while Schär and Jeffrey von der Schulenburg won bronze in men's doubles.

Nothing further, Your Honor.