{
    "action": "tool_call",
    "reasoning": "I've discovered that BYE weeks are recorded as games with null scores, which explains the 837 nulls. But I found something truly bizarre: the HomeTeam column is EMPTY (blank string) for BYE week entries. This is structurally strange - BYE weeks aren't games at all, yet they're recorded as rows with the team on bye listed as AwayTeam and HomeTeam left blank. Let me verify this pattern holds across all BYE entries and check if there are other anomalies with the team data, particularly the 39 distinct teams when NFL has 32.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT AwayTeam, COUNT(*) as bye_count FROM raw.\"2010_2026_scores\" WHERE GameStatus = 'BYE' GROUP BY AwayTeam ORDER BY bye_count DESC",
        "purpose": "Count BYE weeks per team to see if the 39 distinct teams includes defunct/relocated franchises",
        "source": "raw"
    }
}