AI Match Brief: prompt engineering for tactical reads
How we got Claude Haiku to write tactically intelligent 200-word briefs instead of generic recap fluff.
Most "AI match preview" features are useless because the prompt is "summarize this match in 200 words." The model dutifully produces a generic recap. We wanted something better.
The persona prompt
"You are a tactical analyst who has watched thousands of football matches and reads metrics fluently. Your audience is football-literate — they know what xG is, they know basic tactics. You write like an opinion-column author at The Athletic: sharp, specific, never hedging unless data justifies it."
The forbidden things
- "Both teams will be looking to win" (Captain Obvious)
- "This is a must-win game" (cliché)
- "Anything can happen in football" (yes thanks)
- Inventing player names (hard-fail check)
Why Haiku and not Sonnet
Tactical analysis is pattern-matching, not deep reasoning. Haiku 4.5 is competent at this and costs ~$0.005 per brief.
Try the metrics yourself
Open any player or team and explore.
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