Regardless of what Allyson Felix did in the semifinal today at the 2019 USATF Outdoor Championships, the fact she was even able to compete at such a high level less than eight months after going through a high-risk pregnancy that required an emergency C-section is absolutely remarkable. 

As if she couldn't get any more impressive, she not only made it to the line in the preliminary round, but qualified through to today's semifinal in 52.20. 

To mere mortals, that's ridiculously fast, but to six-time Olympic gold medalist Felix, that's far from her potential—she owns a 49.26 400m PR, and who could ever forget her legendary 47.7 split in 2015? 

With her accolades on one hand and her circumstances of the past year on the other, many were influenced by a recency bias when it came to making their prediction about whether or not she would be able to qualify for Sunday's final. 

But, as my coworker Kevin Sully wisely put it earlier today, bet against Allyson Felix at your own risk.

Today, as an unattached athlete following her split from Nike, she qualified for the final by taking third in the second semifinal heat in 51.45, growing her legend even further. Shakima Wimbley took the top spot in 50.20, followed by Courtney Okolo in 50.94. 

Here are the rest of Sunday's finalists: