With seven Grand Slam singles titles and a quarter-century career, Venus Williams can make just about anything look easy.

She was put to the test, though, in the latest episode of CBS's Game On!. The game show pits teams of celebrities led by Venus and the NFL's Rob Gronkowski against one another in physical challenges.

In one segment, Gronk was tasked with popping as many balloons as possible in one minute by sitting on them, and Venus attempted to break the Guinness World Record for the fastest time doing a 10-meter heel-to-toe walk.

"This feels like I'm being asked if I've been drinking and driving," Venus said before failing the challenge—she took 30 seconds when the time to beat was 10.

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Also on the show, Venus threw a "human dart" ...

WATCH: Venus does it all while winning "GAME ON!"

Watched Team Gronk's Bobby Lee get spiked by a sumo wrestler ...

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WATCH: Venus does it all while winning "GAME ON!"

And answered trivia questions while her teammate Ian Karmel wrestled:

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One of the quiz items even required some tennis knowledge, which Venus and comedian Joel McHale were of course ready to supply:

Three winners of the singles career Grand Slam: Rod Laver, Steffi Graf, Rafael Nadal.

Thanks to their performance in the quiz-sumo event, Team Venus won the episode, 12-11, showing that the most important part of any game is often how you finish.