Our AI model has run the numbers for AFL 2026 Round 21. It draws on 1,547 matches back to 2019, reading recent form, head-to-head records, home-ground advantage, streaks, 5-game momentum patterns and points differential for all 9 games.
Honest model accuracy: 69.0% weighted across walk-forward test seasons - see the full tracker, graded out-of-sample so the numbers can't be inflated.
Round 21 Predictions
📍 M.C.G.
Medium
Collingwood
58% wins in 2026
vs
AI Pick
Collingwood
(69% probability)
▲ Collingwood: 6-game win streak
▲ Geelong: Recovery pattern - bouncing back from losses
▲ Collingwood: Better recent form (last 5)
📍 Perth Stadium
Medium
Fremantle
89% wins in 2026
vs
Western Bulldogs
63% wins in 2026
AI Pick
Fremantle
(75% probability)
Western Bulldogs last 5
WLWWW
▲ Fremantle: 3-game win streak
▲ Western Bulldogs: 3-game win streak
📍 Docklands
Medium
AI Pick
St Kilda
(65% probability)
📍 York Park
High
vs
North Melbourne
42% wins in 2026
AI Pick
Hawthorn
(86% probability)
North Melbourne last 5
WLLLL
▲ Hawthorn: 3-game win streak
▼ North Melbourne: 4-game losing streak
▲ Hawthorn: Better recent form (last 5)
📍 Adelaide Oval
Low
Port Adelaide
32% wins in 2026
vs
Greater Western Sydney
42% wins in 2026
AI Pick
Port Adelaide
(58% probability)
Port Adelaide last 5
WWLLL
Greater Western Sydney last 5
LWWLL
▼ Port Adelaide: 3-game losing streak
⚠ Port Adelaide: Collapse pattern - was winning, now sliding
⚠ Greater Western Sydney: Collapse pattern - was winning, now sliding
📍 Docklands
Low
vs
Brisbane Lions
68% wins in 2026
AI Pick
Brisbane Lions
(64% probability)
Brisbane Lions last 5
WWWWW
▲ Brisbane Lions: 7-game win streak
▲ Brisbane Lions: Better recent form (last 5)
📍 M.C.G.
Low
vs
West Coast
21% wins in 2026
AI Pick
Richmond
(57% probability)
▼ Richmond: 8-game losing streak
▼ West Coast: 7-game losing streak
📍 Carrara
Low
Gold Coast
37% wins in 2026
vs
Melbourne
63% wins in 2026
AI Pick
Melbourne
(63% probability)
▼ Gold Coast: 9-game losing streak
▲ Melbourne: Better recent form (last 5)
📍 Docklands
High
AI Pick
Adelaide
(89% probability)
▲ Adelaide: Better recent form (last 5)
Round 21 Summary
| Match | AI Pick | Probability | Confidence |
|---|
| Collingwood vs Geelong | Collingwood | 69% | Medium |
| Fremantle vs Western Bulldogs | Fremantle | 75% | Medium |
| St Kilda vs Sydney | St Kilda | 65% | Medium |
| Hawthorn vs North Melbourne | Hawthorn | 86% | High |
| Port Adelaide vs Greater Western Sydney | Port Adelaide | 58% | Low |
| Carlton vs Brisbane Lions | Brisbane Lions | 64% | Low |
| Richmond vs West Coast | Richmond | 57% | Low |
| Gold Coast vs Melbourne | Melbourne | 63% | Low |
| Essendon vs Adelaide | Adelaide | 89% | High |
Tools for This Round
Responsible gambling: These predictions are generated by an AI model for information and entertainment only. Past accuracy does not guarantee future results. 18+ only. Gamble responsibly - if gambling is causing harm, call Gambling Help Online on 1800 858 858 or visit gamblinghelponline.org.au.
Predictions by the TippingEdge AFL model (XGBoost + Logistic Regression ensemble, 69.0% walk-forward accuracy). Uses 2026 data up to Round 20.
