diff --git a/llama_stack/providers/inline/scoring/basic/scoring_fn/equality_scoring_fn.py b/llama_stack/providers/inline/scoring/basic/scoring_fn/equality_scoring_fn.py
index 0a3fe877f..9991c5502 100644
--- a/llama_stack/providers/inline/scoring/basic/scoring_fn/equality_scoring_fn.py
+++ b/llama_stack/providers/inline/scoring/basic/scoring_fn/equality_scoring_fn.py
@@ -4,12 +4,11 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, Optional
 
 from llama_stack.apis.scoring import ScoringResultRow
 
 from llama_stack.apis.scoring_functions import ScoringFnParams
-from llama_stack.providers.utils.scoring.aggregation_utils import aggregate_metrics
 from llama_stack.providers.utils.scoring.base_scoring_fn import BaseScoringFn
 
 from .fn_defs.equality import equality
@@ -43,22 +42,3 @@ class EqualityScoringFn(BaseScoringFn):
         return {
             "score": score,
         }
-
-    async def aggregate(
-        self,
-        scoring_results: List[ScoringResultRow],
-        scoring_fn_identifier: Optional[str] = None,
-        scoring_params: Optional[ScoringFnParams] = None,
-    ) -> Dict[str, Any]:
-        params = self.supported_fn_defs_registry[scoring_fn_identifier].params
-        if scoring_params is not None:
-            params = scoring_params
-
-        aggregation_functions = []
-        if (
-            params
-            and hasattr(params, "aggregation_functions")
-            and params.aggregation_functions
-        ):
-            aggregation_functions.extend(params.aggregation_functions)
-        return aggregate_metrics(scoring_results, aggregation_functions)
diff --git a/llama_stack/providers/inline/scoring/basic/scoring_fn/regex_parser_scoring_fn.py b/llama_stack/providers/inline/scoring/basic/scoring_fn/regex_parser_scoring_fn.py
index 326d090f8..552f34d46 100644
--- a/llama_stack/providers/inline/scoring/basic/scoring_fn/regex_parser_scoring_fn.py
+++ b/llama_stack/providers/inline/scoring/basic/scoring_fn/regex_parser_scoring_fn.py
@@ -5,11 +5,10 @@
 # the root directory of this source tree.
 import re
 
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, Optional
 
 from llama_stack.apis.scoring import ScoringResultRow
 from llama_stack.apis.scoring_functions import ScoringFnParams, ScoringFnParamsType
-from llama_stack.providers.utils.scoring.aggregation_utils import aggregate_metrics
 from llama_stack.providers.utils.scoring.base_scoring_fn import BaseScoringFn
 
 from .fn_defs.regex_parser_multiple_choice_answer import (
@@ -61,22 +60,3 @@ class RegexParserScoringFn(BaseScoringFn):
         return {
             "score": score,
         }
-
-    async def aggregate(
-        self,
-        scoring_results: List[ScoringResultRow],
-        scoring_fn_identifier: Optional[str] = None,
-        scoring_params: Optional[ScoringFnParams] = None,
-    ) -> Dict[str, Any]:
-        params = self.supported_fn_defs_registry[scoring_fn_identifier].params
-        if scoring_params is not None:
-            params = scoring_params
-
-        aggregation_functions = []
-        if (
-            params
-            and hasattr(params, "aggregation_functions")
-            and params.aggregation_functions
-        ):
-            aggregation_functions.extend(params.aggregation_functions)
-        return aggregate_metrics(scoring_results, aggregation_functions)
diff --git a/llama_stack/providers/inline/scoring/basic/scoring_fn/subset_of_scoring_fn.py b/llama_stack/providers/inline/scoring/basic/scoring_fn/subset_of_scoring_fn.py
index e813cbe6d..29ae12e44 100644
--- a/llama_stack/providers/inline/scoring/basic/scoring_fn/subset_of_scoring_fn.py
+++ b/llama_stack/providers/inline/scoring/basic/scoring_fn/subset_of_scoring_fn.py
@@ -4,11 +4,10 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, Optional
 
 from llama_stack.apis.scoring import ScoringResultRow
 from llama_stack.apis.scoring_functions import ScoringFnParams
-from llama_stack.providers.utils.scoring.aggregation_utils import aggregate_metrics
 from llama_stack.providers.utils.scoring.base_scoring_fn import BaseScoringFn
 
 from .fn_defs.subset_of import subset_of
@@ -37,22 +36,3 @@ class SubsetOfScoringFn(BaseScoringFn):
         return {
             "score": score,
         }
-
-    async def aggregate(
-        self,
-        scoring_results: List[ScoringResultRow],
-        scoring_fn_identifier: Optional[str] = None,
-        scoring_params: Optional[ScoringFnParams] = None,
-    ) -> Dict[str, Any]:
-        params = self.supported_fn_defs_registry[scoring_fn_identifier].params
-        if scoring_params is not None:
-            params = scoring_params
-
-        aggregation_functions = []
-        if (
-            params
-            and hasattr(params, "aggregation_functions")
-            and params.aggregation_functions
-        ):
-            aggregation_functions.extend(params.aggregation_functions)
-        return aggregate_metrics(scoring_results, aggregation_functions)
diff --git a/llama_stack/providers/inline/scoring/llm_as_judge/scoring_fn/llm_as_judge_scoring_fn.py b/llama_stack/providers/inline/scoring/llm_as_judge/scoring_fn/llm_as_judge_scoring_fn.py
index 4320cfdc2..f5baf801d 100644
--- a/llama_stack/providers/inline/scoring/llm_as_judge/scoring_fn/llm_as_judge_scoring_fn.py
+++ b/llama_stack/providers/inline/scoring/llm_as_judge/scoring_fn/llm_as_judge_scoring_fn.py
@@ -5,15 +5,13 @@
 # the root directory of this source tree.
 import re
 
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, Optional
 
 from llama_stack.apis.inference.inference import Inference
 
 from llama_stack.apis.scoring import ScoringResultRow
 from llama_stack.apis.scoring_functions import ScoringFnParams
 
-from llama_stack.providers.utils.scoring.aggregation_utils import aggregate_metrics
-
 from llama_stack.providers.utils.scoring.base_scoring_fn import BaseScoringFn
 
 from .fn_defs.llm_as_judge_405b_simpleqa import llm_as_judge_405b_simpleqa
@@ -47,7 +45,10 @@ class LlmAsJudgeScoringFn(BaseScoringFn):
 
         # override params if scoring_params is provided
         if scoring_params is not None:
-            fn_def.params = scoring_params
+            for attr in scoring_params.__dict__:
+                override_attr = getattr(scoring_params, attr)
+                if override_attr is not None:
+                    setattr(fn_def.params, attr, override_attr)
 
         assert fn_def.params is not None, f"LLMAsJudgeparams not found for {fn_def}."
         assert (
@@ -90,22 +91,3 @@ class LlmAsJudgeScoringFn(BaseScoringFn):
             "score": judge_rating,
             "judge_feedback": content,
         }
-
-    async def aggregate(
-        self,
-        scoring_results: List[ScoringResultRow],
-        scoring_fn_identifier: Optional[str] = None,
-        scoring_params: Optional[ScoringFnParams] = None,
-    ) -> Dict[str, Any]:
-        params = self.supported_fn_defs_registry[scoring_fn_identifier].params
-        if scoring_params is not None:
-            params = scoring_params
-
-        aggregation_functions = []
-        if (
-            params
-            and hasattr(params, "aggregation_functions")
-            and params.aggregation_functions
-        ):
-            aggregation_functions.extend(params.aggregation_functions)
-        return aggregate_metrics(scoring_results, aggregation_functions)
diff --git a/llama_stack/providers/utils/scoring/base_scoring_fn.py b/llama_stack/providers/utils/scoring/base_scoring_fn.py
index 26ba816c4..2db77fd2b 100644
--- a/llama_stack/providers/utils/scoring/base_scoring_fn.py
+++ b/llama_stack/providers/utils/scoring/base_scoring_fn.py
@@ -8,6 +8,7 @@ from typing import Any, Dict, List, Optional
 
 from llama_stack.apis.scoring import ScoringFnParams, ScoringResultRow
 from llama_stack.apis.scoring_functions import ScoringFn
+from llama_stack.providers.utils.scoring.aggregation_utils import aggregate_metrics
 
 
 class BaseScoringFn(ABC):
@@ -44,14 +45,27 @@ class BaseScoringFn(ABC):
     ) -> ScoringResultRow:
         raise NotImplementedError()
 
-    @abstractmethod
     async def aggregate(
         self,
         scoring_results: List[ScoringResultRow],
         scoring_fn_identifier: Optional[str] = None,
         scoring_params: Optional[ScoringFnParams] = None,
     ) -> Dict[str, Any]:
-        raise NotImplementedError()
+        params = self.supported_fn_defs_registry[scoring_fn_identifier].params
+        if scoring_params is not None:
+            if params is None:
+                params = scoring_params
+            else:
+                params.aggregation_functions = scoring_params.aggregation_functions
+
+        aggregation_functions = []
+        if (
+            params
+            and hasattr(params, "aggregation_functions")
+            and params.aggregation_functions
+        ):
+            aggregation_functions.extend(params.aggregation_functions)
+        return aggregate_metrics(scoring_results, aggregation_functions)
 
     async def score(
         self,