diff --git a/muted-tests.yml b/muted-tests.yml
index 8d88797f11ae9..1e720de27a3e0 100644
--- a/muted-tests.yml
+++ b/muted-tests.yml
@@ -435,15 +435,9 @@ tests:
 - class: org.elasticsearch.xpack.esql.qa.single_node.GenerativeForkIT
   method: test {csv-spec:spatial_shapes.ConvertFromStringParseError}
   issue: https://github.com/elastic/elasticsearch/issues/134254
-- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
-  method: "testEvaluateBlockWithNulls {TestCase=<double>, <double>, <double>, <_source> #11}"
-  issue: https://github.com/elastic/elasticsearch/issues/134447
 - class: org.elasticsearch.action.admin.cluster.state.TransportClusterStateActionTests
   method: testGetClusterStateWithDefaultProjectOnly
   issue: https://github.com/elastic/elasticsearch/issues/134450
-- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
-  method: "testEvaluateBlockWithNulls {TestCase=<date_nanos>, <date_nanos>, <time_duration>, <_source> #11}"
-  issue: https://github.com/elastic/elasticsearch/issues/134509
 - class: org.elasticsearch.xpack.esql.plugin.CanMatchIT
   method: testAliasFilters
   issue: https://github.com/elastic/elasticsearch/issues/134512
@@ -468,9 +462,6 @@ tests:
 - class: org.elasticsearch.aggregations.bucket.AggregationReductionCircuitBreakingIT
   method: testCBTrippingOnReduction
   issue: https://github.com/elastic/elasticsearch/issues/134667
-- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
-  method: "testEvaluateBlockWithNulls {TestCase=<integer>, <integer>, <integer>, <_source> #2}"
-  issue: https://github.com/elastic/elasticsearch/issues/134679
 - class: org.elasticsearch.xpack.esql.ccq.MultiClusterSpecIT
   method: test {csv-spec:fork.ForkBeforeStatsByWithWhere}
   issue: https://github.com/elastic/elasticsearch/issues/134817
@@ -522,12 +513,6 @@ tests:
 - class: org.elasticsearch.search.sort.FieldSortIT
   method: testSortMixedFieldTypes
   issue: https://github.com/elastic/elasticsearch/issues/129445
-- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
-  method: "testEvaluateInManyThreads {TestCase=<double>, <double>, <double>, <_source> #17}"
-  issue: https://github.com/elastic/elasticsearch/issues/135357
-- class: org.elasticsearch.xpack.esql.expression.function.scalar.score.DecayTests
-  method: "testEvaluateBlockWithoutNulls {TestCase=<date_nanos>, <date_nanos>, <time_duration>, <_source> #12}"
-  issue: https://github.com/elastic/elasticsearch/issues/135394
 - class: org.elasticsearch.gradle.TestClustersPluginFuncTest
   method: override jdk usage via ES_JAVA_HOME for known jdk os incompatibilities
   issue: https://github.com/elastic/elasticsearch/issues/135413
diff --git a/x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/scalar/score/DecayTests.java b/x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/scalar/score/DecayTests.java
index c68896b13884d..4c99021c450d6 100644
--- a/x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/scalar/score/DecayTests.java
+++ b/x-pack/plugin/esql/src/test/java/org/elasticsearch/xpack/esql/expression/function/scalar/score/DecayTests.java
@@ -21,8 +21,11 @@
 import org.elasticsearch.xpack.esql.core.type.DataType;
 import org.elasticsearch.xpack.esql.expression.function.AbstractScalarFunctionTestCase;
 import org.elasticsearch.xpack.esql.expression.function.TestCaseSupplier;
+import org.hamcrest.Matcher;
 import org.junit.BeforeClass;
 
+import java.math.BigDecimal;
+import java.math.RoundingMode;
 import java.time.Duration;
 import java.time.Instant;
 import java.time.LocalDateTime;
@@ -666,7 +669,7 @@ private static List<TestCaseSupplier> intRandomTestCases() {
                 ),
                 startsWith("DecayIntEvaluator["),
                 DataType.DOUBLE,
-                closeTo(scoreScriptNumericResult, Math.ulp(scoreScriptNumericResult))
+                decayValueMatcher(scoreScriptNumericResult)
             );
         }));
     }
@@ -740,7 +743,7 @@ private static List<TestCaseSupplier> longRandomTestCases() {
                 ),
                 startsWith("DecayLongEvaluator["),
                 DataType.DOUBLE,
-                equalTo(scoreScriptNumericResult)
+                decayValueMatcher(scoreScriptNumericResult)
             );
         }));
     }
@@ -810,7 +813,7 @@ private static List<TestCaseSupplier> doubleRandomTestCases() {
                 ),
                 startsWith("DecayDoubleEvaluator["),
                 DataType.DOUBLE,
-                closeTo(scoreScriptNumericResult, Math.ulp(scoreScriptNumericResult))
+                decayValueMatcher(scoreScriptNumericResult)
             );
         }));
     }
@@ -908,7 +911,7 @@ private static List<TestCaseSupplier> geoPointRandomTestCases() {
                 ),
                 startsWith("DecayGeoPointEvaluator["),
                 DataType.DOUBLE,
-                closeTo(scoreScriptNumericResult, Math.ulp(scoreScriptNumericResult))
+                decayValueMatcher(scoreScriptNumericResult)
             );
         }));
     }
@@ -1087,7 +1090,7 @@ private static List<TestCaseSupplier> datetimeRandomTestCases() {
                 ),
                 startsWith("DecayDatetimeEvaluator["),
                 DataType.DOUBLE,
-                closeTo(scoreScriptNumericResult, Math.ulp(scoreScriptNumericResult))
+                decayValueMatcher(scoreScriptNumericResult)
             );
         }));
     }
@@ -1174,7 +1177,7 @@ private static List<TestCaseSupplier> dateNanosRandomTestCases() {
                     ),
                     startsWith("DecayDateNanosEvaluator["),
                     DataType.DOUBLE,
-                    closeTo(scoreScriptNumericResult, 1e-10)
+                    decayValueMatcher(scoreScriptNumericResult)
                 );
             })
         );
@@ -1229,4 +1232,12 @@ private static MapExpression createOptionsMap(Object offset, Double decay, Strin
 
         return new MapExpression(Source.EMPTY, keyValuePairs);
     }
+
+    private static Matcher<Double> decayValueMatcher(Double value) {
+        if (value == Double.POSITIVE_INFINITY || value == Double.NEGATIVE_INFINITY) {
+            return equalTo(value);
+        }
+
+        return closeTo(BigDecimal.valueOf(value).setScale(4, RoundingMode.CEILING).doubleValue(), 0.001);
+    }
 }