{
    "action": "tool_call",
    "reasoning": "I have evidence about stance performance, match outcomes, and power metrics. However, I notice something striking in step-6: the avg_winner_power and avg_loser_power columns are all NULL despite these being winners with multiple matches. This suggests the power metrics might not correlate with winning as expected. Let me investigate whether punch power actually predicts match outcomes by examining the relationship between estimated punch power and winning.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT CASE WHEN verdict LIKE '%won%' THEN SUBSTRING(verdict, 1, POSITION(' won' IN verdict) - 1) ELSE NULL END as winner, AVG(CASE WHEN verdict LIKE CONCAT(opponent_1, ' won%') THEN opponent_1_estimated_punch_power WHEN verdict LIKE CONCAT(opponent_2, ' won%') THEN opponent_2_estimated_punch_power END) as avg_winner_power, AVG(CASE WHEN verdict LIKE CONCAT(opponent_1, ' won%') THEN opponent_2_estimated_punch_power WHEN verdict LIKE CONCAT(opponent_2, ' won%') THEN opponent_1_estimated_punch_power END) as avg_loser_power, COUNT(*) as matches FROM raw.popular_matches WHERE verdict LIKE '%won%' GROUP BY winner HAVING COUNT(*) >= 3 ORDER BY matches DESC LIMIT 15",
        "purpose": "Calculate actual average punch power for winners vs losers to see if higher power correlates with winning",
        "source": "raw"
    }
}