# Super League Round 21 2026 Predictions & Tips — Alphr > Free AI Super League predictions for Round 21 of the 2026 season — 7 matches, every head-to-head, line, margin and totals pick published before kick-off and verified after full time. Quote with attribution to Alphr (alphr.com.au). ## Round 21 at a glance - 7 matches · 15W–13L on 28 settled picks (54% strike rate) · best value +10.6% edge ## Round 21 predictions | Match | Model pick | Win prob | Result | |---|---|---|---| | Huddersfield Giants v Hull FC | Hull FC | Hull FC 58% | LOST | | Leigh Leopards v Wigan Warriors | Wigan Warriors | Wigan Warriors 63% | WON | | Hull KR v Bradford Bulls | Hull KR | Hull KR 57% | WON | | Leeds Rhinos v Toulouse Olympique | Leeds Rhinos | Leeds Rhinos 63% | WON | | Castleford Tigers v Warrington Wolves | Warrington Wolves | Warrington Wolves 62% | WON | | York Knights v St Helens | St Helens | St Helens 66% | LOST | | Catalans Dragons v Wakefield Trinity | Wakefield Trinity | Wakefield Trinity 72% | WON | ## Match-by-match ### Huddersfield Giants v Hull FC Fri, 31 July, 05:00 am AEST · The Accu Stadium · Round 21 Alphr AI win probability: Huddersfield Giants 41.8% / Hull FC 58.2% - **Head to Head:** Hull FC to win — model probability 58.2% — result: LOST - **Line / Spread:** Hull FC +1.5 — model probability 58.2% — result: LOST - **Margin Band:** Hull FC 1-12 — model probability 58.2% — result: LOST - **Total (Over/Under):** Under 46.5 — model probability 50.0% — result: WON - Predicted margin: Hull FC by 5 · Predicted total: 42 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-huddersfield-giants-v-hull-fc ### Leigh Leopards v Wigan Warriors Sat, 01 Aug, 05:00 am AEST · Leigh Sports Village Stadium · Round 21 Alphr AI win probability: Leigh Leopards 37.3% / Wigan Warriors 62.7% - **Head to Head:** Wigan Warriors to win — model probability 62.7% — result: WON - **Line / Spread:** Leigh Leopards +6.5 — model probability 62.7% — result: LOST - **Margin Band:** Wigan Warriors 1-12 — model probability 62.7% — result: WON - **Total (Over/Under):** Under 44.5 — model probability 50.0% — result: WON - Predicted margin: Wigan Warriors by 4 · Predicted total: 32 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-leigh-leopards-v-wigan-warriors ### Hull KR v Bradford Bulls Sat, 01 Aug, 05:00 am AEST · Sewell Group Craven Park · Round 21 Alphr AI win probability: Hull KR 57.3% / Bradford Bulls 42.7% - **Head to Head:** Hull KR to win — model probability 57.3% — result: WON - **Line / Spread:** Bradford Bulls +32.5 — model probability 57.3% — result: WON - **Margin Band:** Hull KR 1-12 — model probability 57.3% — result: LOST - **Total (Over/Under):** Under 55.5 — model probability 50.0% — result: LOST - Predicted margin: Hull KR by 8 · Predicted total: 45 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-hull-kr-v-bradford-bulls ### Leeds Rhinos v Toulouse Olympique Sat, 01 Aug, 05:00 am AEST · AMT Headingley Stadium · Round 21 Alphr AI win probability: Leeds Rhinos 62.7% / Toulouse Olympique 37.3% - **Head to Head:** Leeds Rhinos to win — model probability 62.7% — result: WON - **Line / Spread:** Toulouse Olympique +26.5 — model probability 62.7% — result: LOST - **Margin Band:** Leeds Rhinos 1-12 — model probability 62.7% — result: LOST - **Total (Over/Under):** Under 56.5 — model probability 50.0% — result: WON - Predicted margin: Leeds Rhinos by 9 · Predicted total: 44 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-leeds-rhinos-v-toulouse-olympique ### Castleford Tigers v Warrington Wolves Sun, 02 Aug, 12:00 am AEST · The OneBore Stadium · Round 21 Alphr AI win probability: Castleford Tigers 38.3% / Warrington Wolves 61.7% - **Head to Head:** Warrington Wolves to win — model probability 61.7% — result: WON - **Line / Spread:** Warrington Wolves -8.5 — model probability 61.7% — result: WON - **Margin Band:** Warrington Wolves 1-12 — model probability 61.7% — result: LOST - **Total (Over/Under):** Under 49.5 — model probability 50.0% — result: LOST - Predicted margin: Warrington Wolves by 10 · Predicted total: 44 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-castleford-tigers-v-warrington-wolves ### York Knights v St Helens Sun, 02 Aug, 02:00 am AEST · LNER Community Stadium · Round 21 Alphr AI win probability: York Knights 34.4% / St Helens 65.6% - **Head to Head:** St Helens to win — model probability 65.6% — result: LOST - **Line / Spread:** York Knights +5.5 — model probability 65.6% — result: WON - **Margin Band:** St Helens 1-12 — model probability 65.6% — result: LOST - **Total (Over/Under):** Under 48.5 — model probability 50.0% — result: LOST - Predicted margin: St Helens by 2 · Predicted total: 41 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-york-knights-v-st-helens ### Catalans Dragons v Wakefield Trinity Sun, 02 Aug, 05:00 am AEST · Stade Gilbert Brutus · Round 21 Alphr AI win probability: Catalans Dragons 27.9% / Wakefield Trinity 72.1% - **Head to Head:** Wakefield Trinity to win — model probability 72.1% — result: WON - **Line / Spread:** Wakefield Trinity -7.5 — model probability 72.1% — result: WON - **Margin Band:** Wakefield Trinity 13-24 — model probability 72.1% — result: WON - **Total (Over/Under):** Under 45.5 — model probability 50.0% — result: WON - Predicted margin: Wakefield Trinity by 22 · Predicted total: 43 Full breakdown: https://alphr.com.au/super-league/match/2026-r21-catalans-dragons-v-wakefield-trinity ## Model performance (2026) | Model | Market | Strike rate | Record | |---|---|---|---| | Head to Head | Win/Loss | 70.9% | 134/189 | | Spread / Line | Spread | 60.3% | 114/189 | | Margin Band | Margin Band | 26.5% | 50/189 | | Over/Under | Total Score | 61.4% | 116/189 | | Anytime Try Scorer | Try Scorer | 31.5% | 198/629 | | First Try Scorer | First Try Scorer | 6.5% | 26/397 | ## More Super League predictions - Previous round: https://alphr.com.au/super-league/round/20 (markdown: /super-league/round/20.md) - Next round: https://alphr.com.au/super-league/round/22 (markdown: /super-league/round/22.md) - All Super League rounds & tips: https://alphr.com.au/super-league (markdown: /super-league.md) --- Canonical URL: https://alphr.com.au/super-league/round/21 RSS feed: https://alphr.com.au/feed.xml Prediction JSON API: today https://alphr.com.au/api/predictions/today · this week https://alphr.com.au/api/predictions/weekly Markdown view for AI agents. Machine-readable index: https://alphr.com.au/llms.txt · full reference: https://alphr.com.au/llms-full.txt All predictions are published before kick-off and verified after full time. Free, no login. 18+ gamble responsibly (AU). Last updated: 2026-09-16 23:50 UTC (latest tip update)