RIZIN Betting Trends: Men’s Flyweight Division

RIZIN Men’s Flyweight betting trends: Overs are 29-9 for +9.70 units and +25.5% ROI since 2024 after both Landmark 15 flyweight fights went Over.

Moneyline Performance Analysis

Bet Type	Record	Units	ROI
Favorites	25-13	-1.81	-4.8%
Underdogs	13-25	-4.62	-12.2%
Coin-Flip Favorites	6-6	-1.60	-13.4%
Coin-Flip Underdogs	6-6	+1.36	+11.3%

The broad moneyline still has not produced a dependable long-term side in RIZIN Flyweight. Favorites have the stronger record at 25-13 but remain negative, while underdogs are also down across the full sample.

Since the beginning of 2025, flyweight underdogs are 11-16 for +1.27 units and +4.7% ROI, while favorites are 16-11 for -3.99 units and -14.8% ROI. Coin-flip dogs are 5-5 for +1.34 units and +13.4% ROI over that same period.

Proposition Betting Analysis

Bet Type	Record	Units	ROI
Over	29-9	+9.70	+25.5%
Under	9-29	-20.64	-54.3%

The Over remains the defining RIZIN Flyweight betting trend. Both Landmark 15 flyweight fights went Over, pushing the 2026 record to 7-2 for +1.50 units and +16.7% ROI.

Since the beginning of 2025, Flyweight Overs are 22-5 for +6.82 units and +25.3% ROI. The Under has moved in the opposite direction at 5-22 for -17.74 units and -65.7% ROI over the same stretch.

Flyweight Betting Trends by Year

Year	Favorite ROI	Dog ROI	Over ROI	Under ROI
2024	+19.8%	-53.5%	+26.2%	-26.4%
2025	-21.5%	+16.8%	+29.6%	-66.1%
2026 YTD	-1.3%	-19.4%	+16.7%	-65.0%

The moneyline has shifted from year to year, but the totals trend has remained remarkably consistent. Overs have been profitable in every season in the available sample.

Performance Summary

RIZIN Men’s Flyweight remains the strongest totals-focused division in the database. The Over is 29-9 for +9.70 units and +25.5% ROI across 38 fights, while the Under has lost more than 20 units over the same sample.