diff --git a/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/baseline_API.json b/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/baseline_API.json
index fbf213aaa465..131de35b7b15 100644
--- a/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/baseline_API.json
+++ b/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/baseline_API.json
@@ -36,7 +36,7 @@
     }
   },
   "paths": {
-    "/{resourceUri}/providers/microsoft.insights/baseline/{metricName}": {
+    "/{resourceUri}/providers/Microsoft.Insights/baseline/{metricName}": {
       "get": {
         "tags": [
           "Baseline"
@@ -103,7 +103,7 @@
         }
       }
     },
-    "/{resourceUri}/providers/microsoft.insights/baseline": {
+    "/{resourceUri}/providers/Microsoft.Insights/baseline": {
       "get": {
         "tags": [
           "Baseline"
@@ -312,6 +312,15 @@
             "description": "A single high threshold value."
           },
           "description": "The high thresholds of the baseline."
+        },
+        "timestamps": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "format": "date-time",
+            "description": "the timestamp for the baseline value in ISO 8601 format."
+          },
+          "description": "the array of timestamps of the baselines."
         }
       },
       "required": [
diff --git a/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/calculateBaseline_API.json b/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/calculateBaseline_API.json
index 39ba5120dd9e..1a7dc013fb17 100644
--- a/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/calculateBaseline_API.json
+++ b/specification/monitor/resource-manager/Microsoft.Insights/stable/2018-09-01/calculateBaseline_API.json
@@ -36,7 +36,7 @@
     }
   },
   "paths": {
-    "/{resourceUri}/providers/microsoft.insights/calculatebaseline": {
+    "/{resourceUri}/providers/Microsoft.Insights/calculatebaseline": {
       "post": {
         "tags": [
           "Baseline"
@@ -154,6 +154,28 @@
             "$ref": "#/definitions/Baseline"
           },
           "description": "The baseline values for each sensitivity."
+        },
+        "statistics": {
+          "type": "object",
+          "properties": {
+            "isEligible": {
+              "type": "string",
+              "description": "is series eligible for dynamic threshold analysis"
+            },
+            "status": {
+              "type": "array",
+              "items": {
+                "type": "string"
+              },
+              "description": "The list of extended status for calculating the baseline."
+            },
+            "seasonalityPeriod": {
+              "type": "integer",
+              "format": "int32",
+              "description": "The seasonality period for calculating the baseline."
+            }
+          },
+          "description": "The statistics"
         }
       },
       "required": [
@@ -195,6 +217,15 @@
             "description": "A single high threshold value."
           },
           "description": "The high thresholds of the baseline."
+        },
+        "timestamps": {
+          "type": "array",
+          "items": {
+            "type": "string",
+            "format": "date-time",
+            "description": "the timestamp for the baseline value in ISO 8601 format."
+          },
+          "description": "the array of timestamps of the baselines."
         }
       },
       "required": [
diff --git a/specification/monitor/resource-manager/readme.md b/specification/monitor/resource-manager/readme.md
index c557b1c09a33..b309d8e165c0 100644
--- a/specification/monitor/resource-manager/readme.md
+++ b/specification/monitor/resource-manager/readme.md
@@ -618,6 +618,9 @@ directive:
     from: dataCollectionRuleAssociations_API.json
     where: $.paths
     reason: 'Operations API is defined in a separate swagger spec for Microsoft.Insights namespace (https://github.com/Azure/azure-rest-api-specs/blob/master/specification/monitor/resource-manager/Microsoft.Insights/stable/2015-04-01/operations_API.json)'
+  - suppress: R4007
+    from: calculateBaseline_API.json
+    reason: 'Updating the error response to the new format would be a breaking change.'
   - suppress: R4007
     from: baseline_API.json
     reason: 'Updating the error response to the new format would be a breaking change.'