Caitlin Clark did not hide her frustration Sunday after the Indiana Fever were routed 102-85 by the Las Vegas Aces in Game 1 of their first-round WNBA playoff series at Michelob ULTRA Arena, and a courtside moment of hers is now ricocheting around social media.

Fan video circulating online shows Clark visibly irritated during a stoppage, mouthing "shut up" toward a heckling fan in the crowd after a rough sequence for Indiana. Clark finished with a double-double — 15 points and 10 assists — but shot just 6-for-18, including 3-for-11 from three, while committing six turnovers, per Yahoo Sports.

Asked afterward to grade her team's effort, Clark didn't soften it: "An F," she said, adding that Indiana's turnovers and overall execution were "sloppy." A'ja Wilson, meanwhile, torched the Fever for 38 points, 16 rebounds, two steals and four blocks in the win, according to Newsweek.

The loss puts the sixth-seeded Fever in an immediate hole against the third-seeded Aces in the best-of-three series. Clark and company get a chance to even things up Tuesday when the series shifts to Gainbridge Fieldhouse in Indianapolis for Game 2 — a game that just became must-watch television given how raw Sunday's blowout left the Fever's star point guard.

Clark's flashes of on-court fire have become a hallmark of her rookie-to-sophomore rise in the league, and clips like this one only add fuel to the ratings surge that's followed her into the postseason.