diff --git a/lib/trading/position-manager.ts b/lib/trading/position-manager.ts
index 47e7863..4c2f815 100644
--- a/lib/trading/position-manager.ts
+++ b/lib/trading/position-manager.ts
@@ -782,10 +782,10 @@ export class PositionManager {
         // CRITICAL: Use trade state flags, not current price (on-chain orders filled in the past!)
         let exitReason: 'TP1' | 'TP2' | 'SL' | 'SOFT_SL' | 'HARD_SL' = 'SL'
         
-        // Include any previously realized profit (e.g., from TP1 partial close)
-        // CRITICAL: Get from original database value, not mutated in-memory value
-        const previouslyRealized = trade.realizedPnL
-        
+        // CRITICAL: Calculate P&L for THIS close only, do NOT add previouslyRealized
+        // Previous bug: Added trade.realizedPnL which could be from prior detection cycles
+        // This caused 10x P&L inflation when same trade detected multiple times
+        // FIX: Calculate ONLY the runner P&L for this specific closure
         let runnerRealized = 0
         let runnerProfitPercent = 0
         if (!wasPhantom) {
@@ -797,10 +797,13 @@ export class PositionManager {
           runnerRealized = (sizeForPnL * runnerProfitPercent) / 100
         }
         
-        const totalRealizedPnL = previouslyRealized + runnerRealized
-        // DON'T mutate trade.realizedPnL here - causes compounding on re-detection!
-        // trade.realizedPnL = totalRealizedPnL  ← REMOVED: Causes duplicate P&L bug
-        console.log(`   Realized P&L calculation → Previous: $${previouslyRealized.toFixed(2)} | Runner: $${runnerRealized.toFixed(2)} (Δ${runnerProfitPercent.toFixed(2)}%) on $${sizeForPnL.toFixed(2)} | Total: $${totalRealizedPnL.toFixed(2)}`)
+        // For external closures, we DON'T know if TP1 already hit, so calculate full position P&L
+        // Database will have correct previouslyRealized if TP1 was hit
+        // For external closures, we DON'T know if TP1 already hit, so calculate full position P&L
+        // Database will have correct previouslyRealized if TP1 was hit
+        const totalRealizedPnL = runnerRealized
+        console.log(`   External closure P&L → ${runnerProfitPercent.toFixed(2)}% on $${sizeForPnL.toFixed(2)} = $${totalRealizedPnL.toFixed(2)}`)
+
         
         // Determine exit reason from trade state and P&L
         if (trade.tp2Hit) {