March Madness Day 1: Live updates, scores, takeaways

Every opening-day game of the men's 2025 NCAA tournament has officially tipped off -- and we've been tracking all of the action.

Consider this your guide to all the major highlights and results, along with reactions and on-site reporting from ESPN writers across the country.

Jump to: Live updates | Results and takeaways

Day 1 results

Most recent games listed first.

(12) UC San Diego vs.
(5) Michigan

Final: Michigan beats UC San Diego, 68-65

How Michigan won: The Wolverines tried hard to not look annoyed when their first-round opponent had become a trendy upset pick, but Michigan was ultimately one shot off the rim at the buzzer from going to overtime against UC San Diego on Thursday night.