MARCH 1 UPDATE:

Round One has ended, the votes have been counted, and here's what went down in the Mavericks division.

The Mavericks division is shaping up to be the wildest in the entire tournament. This group now boasts not only the closest score of the first round — a two-point photo finish between Valkyrie and Spider-Gwen — but also one of the craziest contests in the second round. 

Jessica Jones and Jean Grey will face off in a barely-fair Round Two duel that could decide the entire division. Whose defense mechanisms will triumph and set the stage for a final four appearance?

Domino upset Negasonic Teenage Warhead. Next, she'll test her seemingly endless luck against Valkyrie. Who should move on to the next round? You get to decide. Vote now on Twitter.com/CNET or click below! 

Valkyrie vs. Domino

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Forget March Madness. We have a much geekier tournament for you: the Women of the Marvel universe bracket smackdown. There are four divisions with 32 badass heroes and villains from across the Marvel Cinematic Universe, comics, X-Men movies and crossovers and more. The final matchup will pit one goodie against one baddie ... and only one woman of Marvel will be left standing in our mega bracket.

Best of all: you get to decide who that is right here (click out to Twitter for the full thread!): 

Agent Peggy Carter vs. Jessica Jones

Meet the Mavericks division. These are the Marvel heroes you'd want to plan your Vegas bachelorette party. They don't play by any man's rules. Click the names for more on each hero's history, powers and appearances. (Note some appeared under different names in Marvel's comic books.)

See who's winning and who's been knocked out every week on our main bracket page. Plus, check out the other categories here: 

Originally published Feb. 24 at 6:30 p.m. PT.Update, at 11:48 a.m. PT: Added updated Twitter voting thread.

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