This is awesome! I was unaware of the FiveThirtyEight API, which looks like a a great data source!
As of 8:30 EDT on Saturday April 3, your bracket doesn't display the winner of the Women's game between Stanford and South Carolina, though that game does appear in the data.
Thanks for the heads up! I've updated the placement code and Stanford is now showing up.
Glad you like it! The FiveThirtyEight data is great, and I'm just scratching the surface of it here - I plan on using the in-game win probabilities in a future notebook.