The latest betting forecasts for WrestleMania 40, WWE's marquee live event, have been updated, offering insight into who the favorites and underdogs are as the event approaches. Initially, the odds favored Roman Reigns and The Rock at -500 (or a 1/5 chance), and Cody Rhodes and Seth Rollins as the less likely winners at +300 (or a 3/1 chance), with the odds increasingly tilting in favor of the initial favorites. Contrarily, for Bayley's match, despite starting at -1250 (or a 2/25 chance) against IYO SKY's +550 (or an 11/2 chance), the odds unexpectedly shifted to favor the underdog as the event drew closer.

In sports betting, favorites are indicated by a negative (-) sign and a smaller number, signifying a higher likelihood of winning, while underdogs are marked with a positive (+) sign and a larger number, indicating a lower chance of victory. According to Bet Online, the latest betting odds are as follows:

Roman Reigns & The Rock are now at -900, indicating a stronger favoritism against Cody Rhodes & Seth Rollins, who stand at +500.

In the WWE Women's Championship Match, Bayley's odds have adjusted to -300, while IYO SKY, the current champion, has seen her odds improve to +200.

Rhea Ripley, the reigning WWE Women's World Champion, is favored at -450 against Becky Lynch, who is at +275.

For the WWE United States Championship Match, the champion Logan Paul is at -300, with Kevin Owens at +325 and Randy Orton at +350, making it a highly contested match.

LA Knight is heavily favored at -600 against AJ Styles, who is at +300.

In the tag team arena, Dominik Mysterio & Santos Escobar are at -180, with Rey Mysterio & Dragon Lee slightly behind at +140.

Lastly, the team of Bianca Belair, Jade Cargill, & Naomi is significantly favored at -2000 against Dakota Kai, Asuka, & Kairi Sane, who are at +700.