Jack Massey vs Jai Opetaia

Data as of: 2026-05-13 14:32:09 UTC Historical As-of 2024-10-12

Analysis

Matchup weight class

Using confirmed bout weight class for matchup factors.

Massey vs Opetaia 12 Oct 2024 Result: Opetaia Historical Pick 89.46% Prediction: Correct Tap to expand Analysis

Change fighters and profiles

Matchup weight class

Using confirmed bout weight class for matchup factors.

Bout details

Fight result Jai Opetaia (TKO)

Model pick Jai Opetaia 89.46%

Prediction result Correct

Massey odds 13.2000

Opetaia odds 1.0500

Massey implied 7.58%

Opetaia implied 95.24%

Pick odds 1.05

Pick implied 95.24%

Expected return 0.9394

ROI -6.06%

Edge -5.77%

Lean No Value

Bout Historical

Odds updated 2026-03-23 16:20:44 UTC

Fighter details

Jack Massey

Score 48.84 · 23-3-0 (13 KO)

Full name Jack Massey

Age 33 · Rank #445 · Confidence Medium 0.543

Stance Orthodox · H/R 193cm / N/A · GB

Jai Opetaia

Score 77.69 · 30-0-0 (23 KO)

Full name Jai Tapu Opetaia

Age 30 · Rank #19 · Confidence Medium 0.691

Stance Southpaw · H/R 188cm / 193cm · AU

The Ring Cruiserweight IBF Cruiserweight

Jack Massey

Full name: Jack Massey
Age: 33
Fighter rank: #445
Current model score: 48.84
Fighter confidence: Medium 0.543
Stance: Orthodox
Height/Reach: 193cm / N/A
Nationality: GB
Career snapshot: 23-3-0 (13 KO)

12 Oct 2024

Pre-fight Projection

Result

Opetaia

Historical

11% Massey

89% Opetaia

Fight result: Jai Opetaia (TKO)
Model pick: Jai Opetaia 89.46%
Prediction result: Correct
Pick probability: 89.46%
Market odds: 1.05
Implied probability: 95.24%
Expected ROI (1u): -6.06%
Value edge: -5.77%
Lean assessment: No Value

Odds updated 2026-03-23 16:20:44 UTC

Jai Opetaia

Full name: Jai Tapu Opetaia
Age: 30
Fighter rank: #19
Current model score: 77.69
Fighter confidence: Medium 0.691
Stance: Southpaw
Height/Reach: 188cm / 193cm
Nationality: AU
Career snapshot: 30-0-0 (23 KO)

World titles

The Ring Cruiserweight IBF Cruiserweight

Subjective Stats

Methodology

Punching Power

63.0 Massey Confidence Medium 0.720

83.2 Opetaia Confidence High 0.830

Punching Accuracy

48.8 Massey Confidence Medium 0.520

83.8 Opetaia Confidence High 0.750

Hand Speed

47.6 Massey Confidence Low 0.450

83.4 Opetaia Confidence Medium 0.680

Pace Pressure

47.1 Massey Confidence Medium 0.500

75.5 Opetaia Confidence Medium 0.670

Defensive Skill

52.0 Massey Confidence Medium 0.550

85.7 Opetaia Confidence High 0.790

Distance Footwork Control

50.9 Massey Confidence Low 0.480

84.9 Opetaia Confidence High 0.800

Ring Iq Adaptability

59.2 Massey Confidence Medium 0.580

84.7 Opetaia Confidence High 0.810

Counter Punching

52.1 Massey Confidence Low 0.400

82.5 Opetaia Confidence Medium 0.660

Chin

63.6 Massey Confidence Medium 0.570

84.5 Opetaia Confidence Medium 0.630

Cardio Engine

55.7 Massey Confidence Medium 0.620

83.1 Opetaia Confidence High 0.770

Style Profile Massey: Boxer-Puncher Power Slugger vs Opetaia: Boxer-Puncher Out-Boxer Expand

Style rows below share a 100-point allocation for each fighter. They are not separate 100-point scales.

Pressure Swarmer

12.0 Massey Confidence Low 0.410

18.0 Opetaia Confidence Medium 0.540

Out Boxer

22.0 Massey Confidence Medium 0.580

22.0 Opetaia Confidence Medium 0.700

Power Slugger

24.0 Massey Confidence Medium 0.610

20.0 Opetaia Confidence Medium 0.730

Boxer Puncher

34.0 Massey Confidence Medium 0.690

32.0 Opetaia Confidence High 0.820

Counter Puncher

8.0 Massey Confidence Low 0.290

8.0 Opetaia Confidence Low 0.430

Stance Advantage Massey Advantage Vs Orthodox vs Opetaia Advantage Vs Orthodox Expand

Stance rows below also share a 100-point allocation for each fighter rather than separate 100-point scales.

Vs Orthodox

66.0 Massey Confidence Medium 0.630

68.0 Opetaia Confidence Medium 0.700

Vs Southpaw

34.0 Massey Confidence Medium 0.630

32.0 Opetaia Confidence Low 0.430

Objective Stats

Methodology

Win Rate Last 3

66.67 Massey

100 Opetaia

Ko Rate Last 3

33.33 Massey

66.67 Opetaia

Activity Last 3 In Last 12m

33.33 Massey

100 Opetaia

Opponent Rating Last 3

64.57 Massey

61.01 Opetaia

Trend Score Last 5

60 Massey

100 Opetaia

Win Rate Last 3 Relative

78.99 Massey

100 Opetaia

Ko Rate Last 3 Relative

42.75 Massey

72.22 Opetaia

Activity Last 3 In Last 12m Relative

33.33 Massey

100 Opetaia

Opponent Rating Last 3 Relative

64.57 Massey

61.01 Opetaia

Trend Score Last 5 Relative

72.5 Massey

100 Opetaia

Matchup Factors

Weight Class Difference

Massey stays in class.

Opetaia stays in class.

Interaction: No advantage.

Advantage: Neutral

Reach vs Height Delta

Massey reach: N/A height: 193.0cm delta: N/A

Opetaia reach: 193.0cm height: 188.0cm delta: 5.0cm

Interaction: No advantage.

Advantage: Neutral

Stance Interaction

Massey advantage against orthodox: 66.0

Opetaia advantage against orthodox: 68.0

Interaction: medium advantage Opetaia.

Advantage: Opetaia

Style Interaction

Massey style: Boxer Puncher

Opetaia style: Boxer Puncher

Interaction: No advantage.

Advantage: Neutral