diff --git a/onchain/script/backtesting/EventReplayer.sol b/onchain/script/backtesting/EventReplayer.sol
index 75d7b16..ecb36e8 100644
--- a/onchain/script/backtesting/EventReplayer.sol
+++ b/onchain/script/backtesting/EventReplayer.sol
@@ -135,10 +135,14 @@ contract EventReplayer is IUniswapV3MintCallback, IUniswapV3SwapCallback {
             }
         }
 
-        // Final drift sample: capture any trailing events after the last checkpoint.
-        // This prevents understating drift when (totalReplayed % LOG_INTERVAL) != 0.
-        if (hasSwapRef) {
-            (uint160 finalSqrtPrice, int24 finalTick,,,,,) = pool.slot0();
+        // Fetch final pool state once — used both for the trailing drift sample and _logSummary.
+        (uint160 finalSqrtPrice, int24 finalTick,,,,,) = pool.slot0();
+
+        // Final drift sample: captures trailing events after the last checkpoint.
+        // Guard: when idx is an exact multiple of LOG_INTERVAL, _logCheckpoint already fired for
+        // this identical pool state inside the loop — accumulating stats again would double-count
+        // that measurement in totalAbsDrift and checkpointsWithDrift.
+        if (hasSwapRef && idx % LOG_INTERVAL != 0) {
             int256 diff = int256(finalTick) - int256(lastExpectedTick);
             uint256 absDrift = diff >= 0 ? uint256(diff) : uint256(-diff);
             totalAbsDrift += absDrift;
@@ -155,7 +159,7 @@ contract EventReplayer is IUniswapV3MintCallback, IUniswapV3SwapCallback {
             }
         }
 
-        _logSummary(idx);
+        _logSummary(idx, finalSqrtPrice, finalTick);
     }
 
     // -------------------------------------------------------------------------
@@ -410,8 +414,7 @@ contract EventReplayer is IUniswapV3MintCallback, IUniswapV3SwapCallback {
         return keccak256(bytes(a)) == keccak256(bytes(b));
     }
 
-    function _logSummary(uint256 totalReplayed) internal view {
-        (uint160 finalSp, int24 finalTick,,,,,) = pool.slot0();
+    function _logSummary(uint256 totalReplayed, uint160 finalSp, int24 finalTick) internal view {
         console2.log("=== Replay Complete ===");
         console2.log("Total events:    ", totalReplayed);
         console2.log("Skipped:         ", skippedCount);