Callum Simpson vs Troy Williamson

Data as of: 2026-05-15 09:25:13 UTC Historical As-of 2025-12-20

Matchup weight class

Using confirmed bout weight class for matchup factors.

Simpson vs Williamson 20 Dec 2025 Result: Williamson Historical Pick 54.29% Prediction: Incorrect Tap to expand Analysis

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Matchup weight class

Using confirmed bout weight class for matchup factors.

Bout details

Fight result Troy Williamson (TKO)

Model pick Callum Simpson 54.29%

Prediction result Incorrect

Simpson odds 1.1667

Williamson odds 5.8000

Simpson implied 85.71%

Williamson implied 17.24%

Pick odds 1.1667

Pick implied 85.71%

Expected return 0.6335

ROI -36.65%

Edge -31.42%

Lean No Value

Bout Historical

Odds updated 2026-04-21 18:58:05 UTC

Fighter details

Callum Simpson

Score 62.98 · 18-1-0 (13 KO)

Full name Callum Simpson

Age 29 · Rank #273 · Confidence Medium 0.566

Stance Orthodox · H/R 191cm / 191cm · GB

Troy Williamson

Score 54.91 · 22-4-1 (16 KO)

Full name Troy Williamson

Age 34 · Rank #368 · Confidence Medium 0.519

Stance Orthodox · H/R 180cm / N/A · GB

Callum Simpson

Full name: Callum Simpson
Age: 29
Fighter rank: #273
Current model score: 62.98
Fighter confidence: Medium 0.566
Stance: Orthodox
Height/Reach: 191cm / 191cm
Nationality: GB
Career snapshot: 18-1-0 (13 KO)

20 Dec 2025

Pre-fight Projection

Result

Williamson

Historical

54% Simpson

46% Williamson

Fight result: Troy Williamson (TKO)
Model pick: Callum Simpson 54.29%
Prediction result: Incorrect
Pick probability: 54.29%
Market odds: 1.1667
Implied probability: 85.71%
Expected ROI (1u): -36.65%
Value edge: -31.42%
Lean assessment: No Value

Odds updated 2026-04-21 18:58:05 UTC

Troy Williamson

Full name: Troy Williamson
Age: 34
Fighter rank: #368
Current model score: 54.91
Fighter confidence: Medium 0.519
Stance: Orthodox
Height/Reach: 180cm / N/A
Nationality: GB
Career snapshot: 22-4-1 (16 KO)

Subjective Stats

Methodology

Punching Power

75.2 Simpson Confidence High 0.750

78.0 Williamson Confidence High 0.790

Punching Accuracy

71.2 Simpson Confidence Medium 0.580

64.0 Williamson Confidence Low 0.490

Hand Speed

68.0 Simpson Confidence Medium 0.500

58.0 Williamson Confidence Low 0.380

Pace Pressure

79.8 Simpson Confidence Medium 0.640

74.0 Williamson Confidence Medium 0.680

Defensive Skill

67.3 Simpson Confidence Medium 0.520

56.0 Williamson Confidence Low 0.450

Distance Footwork Control

74.2 Simpson Confidence Medium 0.560

55.0 Williamson Confidence Low 0.430

Ring Iq Adaptability

72.1 Simpson Confidence Medium 0.610

60.0 Williamson Confidence Low 0.470

Counter Punching

65.3 Simpson Confidence Low 0.420

52.0 Williamson Confidence Low 0.340

Chin

60.3 Simpson Confidence Low 0.470

70.0 Williamson Confidence Medium 0.540

Cardio Engine

70.3 Simpson Confidence Medium 0.630

72.0 Williamson Confidence Medium 0.630

Style Profile Simpson: Boxer-Puncher Pressure Swarmer vs Williamson: Boxer-Puncher Power Slugger Expand

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

Pressure Swarmer

24.0 Simpson Confidence Medium 0.540

24.0 Williamson Confidence Medium 0.530

Out Boxer

18.0 Simpson Confidence Medium 0.580

10.0 Williamson Confidence Low 0.340

Power Slugger

22.0 Simpson Confidence Medium 0.630

28.0 Williamson Confidence Medium 0.660

Boxer Puncher

30.0 Simpson Confidence Medium 0.680

30.0 Williamson Confidence Medium 0.610

Counter Puncher

6.0 Simpson Confidence Low 0.320

8.0 Williamson Confidence Low 0.250

Stance Advantage Simpson Advantage Vs Southpaw vs Williamson Advantage Vs Orthodox Expand

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

Vs Orthodox

42.0 Simpson Confidence Medium 0.600

68.0 Williamson Confidence Medium 0.620

Vs Southpaw

58.0 Simpson Confidence Medium 0.600

32.0 Williamson Confidence Medium 0.620

Objective Stats

Methodology

Win Rate Last 3

66.67 Simpson

66.67 Williamson

Ko Rate Last 3

0 Simpson

66.67 Williamson

Activity Last 3 In Last 12m

66.67 Simpson

66.67 Williamson

Opponent Rating Last 3

62.14 Simpson

63.97 Williamson

Trend Score Last 5

80 Simpson

70 Williamson

Win Rate Last 3 Relative

83.33 Simpson

75 Williamson

Ko Rate Last 3 Relative

0 Simpson

66.67 Williamson

Activity Last 3 In Last 12m Relative

66.67 Simpson

66.67 Williamson

Opponent Rating Last 3 Relative

62.14 Simpson

63.97 Williamson

Trend Score Last 5 Relative

90 Simpson

75 Williamson

Matchup Factors

Weight Class Difference

Simpson moves down 1 classes.

Williamson moves down 1 classes.

Interaction: No advantage.

Advantage: Neutral

Reach vs Height Delta

Simpson reach: 191.0cm height: 191.0cm delta: 0.0cm

Williamson reach: N/A height: 180.0cm delta: N/A

Interaction: No advantage.

Advantage: Neutral

Stance Interaction

Simpson advantage against southpaw: 58.0

Williamson advantage against orthodox: 68.0

Interaction: medium advantage Williamson.

Advantage: Williamson

Style Interaction

Simpson style: Boxer Puncher

Williamson style: Boxer Puncher

Interaction: No advantage.

Advantage: Neutral