diff --git a/scripts/run_guard3b_overnight_spark.sh b/scripts/run_guard3b_overnight_spark.sh
index 883e073..f72b895 100755
--- a/scripts/run_guard3b_overnight_spark.sh
+++ b/scripts/run_guard3b_overnight_spark.sh
@@ -57,7 +57,8 @@ fi
 cp "$PROJECT/artifex_overnight/guard3b_v03_canary/pilot_metrics.json" "$RUN_ROOT/canary_metrics.json"
 
 # Base and the initial Challenger use the identical fixed harness/version.
-evaluate base
+# Reuse a completed base result when resuming after an infrastructure repair.
+if [[ ! -s "$RUN_ROOT/base_evmbench.json" ]]; then evaluate base; else docker_run python /workspace/scripts/score_evmbench_strict.py "/workspace/artifex_overnight/guard3b_v03_overnight/base_evmbench.json" > "$RUN_ROOT/base_strict.json" 2>&1; fi
 cp "$RUN_ROOT/base_strict.json" "$RUN_ROOT/current_strict.json"
 CURRENT=guard3b_v03_canary
 evaluate canary "$CURRENT"