Keith Olbermann unwisely took a jab at former NCAA swimmer Riley Gaines, host of "Gaines for Girls" on OutKick.com, over her athleticism. It didn't work out very well for him.

Olbermann, who has a history of going after prominent conservative-leaning women on social media from the safety of his basement studio, opted to take a shot at Gaines after Education Secretary Linda McMahon suggested she would have won her race had it not been for a biological male participating in the event.

"She finished 85th in the Olympic Trials," he responded. "She finished tied for 5th in the only race including a transgendered athlete. If there had been none, she MIGHT have finished tied for 4th, or had 5th place to herself."

"[Gaines] was, somehow, a worse swimmer than she is a MAGA stooge."

Nerds taking on superior athletes rarely work out. And Olbermann drew a response from Gaines. She might as well have given him an atomic wedgie, a swirly, and stuffed him in a locker.

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Gaines defended herself by pointing out she was just 15 when she competed in the Olympic trials.

"And I placed 5th *in the nation* in a sport measured in .01s of a second without going a best. Would you say the 5th-best college football player is objectively bad at their sport?" she wondered.

"No. You’re just a misogynistic pig [and] an old, deranged man with a terminal case of TDS who can’t hold down a job."

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All of which is true.

Keith, whose podcast rants make him seem about as well-connected to reality and mature as Harry Sisson, has been fired and/or suspended from Fox Sports, Current TV, ESPN (multiple times), and MSNBC/NBC.

Literally can't hold down a job.

Gaines then told Fox News Digital that Olbermann should put his money where his mouth is and compete against her in a charity race. Initially, she was hesitant to engage in such a challenge for reasons that made sense to anybody with a working pair of eyes.

"I'd challenge [Keith] to a race where the loser puts up $ to the charity of the winner's choice, but no one wants to see him in a Speedo," she said.

That said, she eventually relented and opted to see if Olbermann was interested in a 200-yard freestyle for a good cause. The former sports journalist dusted off his potato chip-greased hands, pulled up his little Handmaid's Tale underoos, and marched right back down to his basement to respond by tweet.

"This is a brilliant idea [Riley]! A 66-year-old man with an arthritic left knee and chronic stress fractures in the right foot," he wrote. "Somebody you could finally beat!"

Bro, who are you kidding? Even in your prime, there is zero chance you'd have a shot against Joe Biden in a bike race, let alone Riley freaking Gaines in a swimming competition.

Gaines is an accomplished former NCAA swimmer. Her bio at Kentucky recounts a slew of academic and athletic accomplishments, including:

Olbermann, by contrast, mostly likes to rant at the clouds and has never played a sport in his life. The one time he actually tried to pull off an athletic feat of any kind was in 1980 when, upon watching a Mets game at the old Shea Stadium, he tried leaping onto a subway only to hit his head so hard that it rendered him unable to drive a vehicle.

Keith must enjoy getting smacked around by strong women. The completely unemployable has-been once took on Megyn Kelly by pointing to a job controversy during her time at NBC News. And again, it didn't turn out well for him.

“But the record is very clear that I left voluntarily because I wanted to raise my family,” Kelly replied. “Something you don’t know anything about because no one would marry you.”

“And you have no children,” she continued. “You have a cold, lonely life in which you’ve become a bitter, bitter man."

Now, he's a bitter, deranged man shouting into the wind, desperately trying to get the attention of a young woman with athletic prowess and the intellect to understand when a man is pretending to be a woman to improve their athletic careers.

All because he has none of those attributes.