Betting tips from AI for Alexa Grasso vs Rose Namajunas, 31 December 2025.

Breaking news has Alexa Grasso pulled from the card with Natalia Silva stepping in, turning a dream ex-champ showdown into a very different test for Rose Namajunas. Grasso had been installed as the heavy favorite at 1.25, while Namajunas sat at 3.90
Silva’s 13-fight win streak and recent wins over Grasso and Andrade make her the betting favorite in reality, but if books leave Namajunas near +290 you’ve got an overlay. Namajunas’s momentum, diverse striking and experienced game plan give her the best path to an upset, so I back Rose to take advantage of the market noise and cash a high-value underdog ticket.

This is a fascinating matchup, or rather, a fascinating betting line given the recent developments. While the bookmakers have Alexa Grasso as a substantial favorite at 1.25, the news paints a very different picture of her current form. Grasso has been winless in her last three outings, suffering a decision loss to Natalia Silva and a trilogy defeat to Valentina Shevchenko. More critically, she's reportedly pulled out of her actual clash with Namajunas due to injury, which speaks volumes about her current physical state.

On the other side, Rose Namajunas is riding a wave of momentum. She's 3-2 at flyweight since 2023, fresh off a gritty decision win over Miranda Maverick, and has secured recent victories over Tracy Cortez and Amanda Ribas. Her upward trajectory contrasts sharply with Grasso's recent struggles. Betting on a 1.25 favorite who is winless in her last three and dealing with injuries is a high-risk proposition with minimal reward. The value here clearly lies with the surging underdog, Rose Namajunas, at 3.90. Her recent performances suggest she's more than capable of pulling off the upset.

This matchup has undergone a dramatic shift with Alexa Grasso pulling out due to injury and being replaced by Natalia Silva. The odds provided are now irrelevant as they were for a Grasso-Namajunas fight that won't happen. With Silva stepping in, we're looking at a completely different dynamic.

Silva enters on a remarkable 13-fight win streak, including an 8-0 UFC run and a recent victory over Grasso herself at UFC 315. Her momentum is undeniable, having defeated two former champions consecutively.

Namajunas, while showing solid form at 3-2 in the flyweight division, faces a significant challenge against the surging Brazilian. Her recent wins over Maverick, Cortez, and Ribas demonstrate her adaptability, but Silva represents a different level of opposition right now.

Given Silva's current form, including her victory over the very fighter Namajunas was originally scheduled to face, the smart money would be on Silva to continue her impressive run.

In a stunning shakeup for UFC 324, Alexa Grasso has pulled out of her highly anticipated flyweight clash with Rose Namajunas due to injury, paving the way for Natalia Silva to step in and face the former strawweight queen. This pivot turns what was a dream ex-champ matchup into a high-stakes test for Namajunas against the division's hottest prospect.

Silva enters on an incredible 13-fight win streak, including a dominant 8-0 UFC run and back-to-back triumphs over elite competition like Grasso and Jessica Andrade. Her technical striking and relentless pressure have made her a nightmare for flyweights, positioning her as the top-ranked Brazilian threat ready to dethrone veterans.

Namajunas, meanwhile, is 3-2 at 125 pounds since 2023, coming off a hard-fought decision win over Miranda Maverick in June. Her experience and heart are undeniable, but facing Silva's momentum feels like an uphill battle. The original odds had Grasso as a heavy favorite at 1.25, with Namajunas at 3.90, but Silva's form suggests even better value on her side now.

Betting $1 on Silva to win promises solid returns in this blockbuster at T-Mobile Arena. Her streak and recent conquests of ex-champs make her the clear pick to extend her dominance.

The scheduled bout between Alexa Grasso and Rose Namajunas has been dramatically altered by news that Grasso withdrew due to injury, with Natalia Silva stepping in. This nullifies Grasso's heavy 1.25 favorite status, while Namajunas at 3.90 becomes a compelling underdog play.
Namajunas rides momentum from a recent decision win over Miranda Maverick, boasting a 3-2 flyweight record and victories over Tracy Cortez and Amanda Ribas. Despite Silva's impressive win streak, Namajunas's elite experience and sharp striking give her the edge in this reshuffled matchup.
With Grasso out, betting on Namajunas at plus odds offers significant value given her form and the opponent change.

The UFC 324 shakeup has completely altered the landscape of this bout, replacing Alexa Grasso with Natalia Silva. While Grasso’s name remains on the oddsboard, her absence due to injury means we must focus on Silva’s potential impact against Rose Namajunas. Silva enters this matchup riding a jaw-dropping 13-fight win streak, including back-to-back victories over former champions like Grasso and Jessica Andrade. Her relentless style and precision have made her one of the most feared fighters in the division.

Namajunas, meanwhile, brings her own momentum into this contest. With a record of 3-2 at flyweight since 2023, she’s coming off a gritty decision win over Miranda Maverick and previous triumphs against Tracy Cortez and Amanda Ribas. However, her path gets significantly tougher against Silva, who is undefeated in the UFC at 8-0 and boasts superior finishing ability. The odds reflect skepticism toward Namajunas’ chances, listing her at 3.90, while Silva—fighting under Grasso’s name—is heavily favored at 1.25.

Given Silva’s dominance and Grasso’s recent struggles, it’s hard to envision Namajunas overcoming this surging Brazilian talent. Betting on Silva (technically as Grasso) seems like the smart play here, especially given the overwhelming gap in current form and trajectory.