diff --git a/src/shared/components/challenge-detail/MMDashboard/Graph/index.jsx b/src/shared/components/challenge-detail/MMDashboard/Graph/index.jsx
index 9c0a395eb..359f51121 100644
--- a/src/shared/components/challenge-detail/MMDashboard/Graph/index.jsx
+++ b/src/shared/components/challenge-detail/MMDashboard/Graph/index.jsx
@@ -26,33 +26,41 @@ export default function Graph({ statisticsData, baseline, awardLine }) {
     });
   });
 
-  const pointDatas = _.map(flatData, (data) => {
-    let color;
-    let isSelected = false;
-    if (point) {
-      isSelected = point.customData.handle === data.handle;
-      if (isSelected) {
-        color = getHighlightedColor(data.rating || 0);
+  const pointDatas = _.chain(flatData)
+    .map((data) => {
+      let color;
+      let isSelected = false;
+      if (point) {
+        isSelected = point.customData.handle === data.handle;
+        if (isSelected) {
+          color = getHighlightedColor(data.rating || 0);
+        } else {
+          color = getUnSelectedColors(data.rating || 0);
+        }
       } else {
-        color = getUnSelectedColors(data.rating || 0);
+        color = data.ratingColor || getRatingColor(data.rating || 0);
       }
-    } else {
-      color = data.ratingColor || getRatingColor(data.rating || 0);
-    }
-    return {
-      x: moment(data.created || data.createdAt).valueOf(),
-      y: _.max([0, data.score ? (parseFloat(data.score)) : 0]),
-      name: data.handle,
-      color,
-      customData: data,
-      marker: {
-        enabled: true,
-        width: 'circle',
-        radius: isSelected ? 6 : 4,
-      },
-      className: !isSelected && point ? styles.selectedPoint : '',
-    };
-  });
+
+      const score = parseFloat(data.score);
+      const x = moment(data.created || data.createdAt).valueOf();
+      const y = _.max([0, Number.isFinite(score) ? score : 0]);
+
+      return {
+        x,
+        y,
+        name: data.handle,
+        color,
+        customData: data,
+        marker: {
+          enabled: true,
+          width: 'circle',
+          radius: isSelected ? 6 : 4,
+        },
+        className: !isSelected && point ? styles.selectedPoint : '',
+      };
+    })
+    .filter(pointData => Number.isFinite(pointData.x) && Number.isFinite(pointData.y))
+    .value();
 
   const options = {
     plotOptions: {
@@ -79,6 +87,7 @@ export default function Graph({ statisticsData, baseline, awardLine }) {
     series: [
       {
         data: pointDatas,
+        turboThreshold: 0,
         pointStart: moment(_.min(dates)).valueOf(),
         pointInterval: 24 * 3600 * 1000,
         backgroundColor: 'rgb(51,51,51)',
diff --git a/src/shared/containers/challenge-detail/index.jsx b/src/shared/containers/challenge-detail/index.jsx
index 3b972b09e..a10e0e7be 100644
--- a/src/shared/containers/challenge-detail/index.jsx
+++ b/src/shared/containers/challenge-detail/index.jsx
@@ -134,6 +134,14 @@ export function getDisplayWinners(challenge = {}) {
   });
 }
 
+function hasRenderableStatisticsData(statisticsData) {
+  return Array.isArray(statisticsData)
+    && statisticsData.some(entry => (
+      Array.isArray(_.get(entry, 'submissions'))
+      && _.get(entry, 'submissions.length', 0) > 0
+    ));
+}
+
 /**
  * Given challenge details object, it returns the URL of the image to be used in
  * OpenGraph (i.e. in social sharing posts).
@@ -349,9 +357,8 @@ class ChallengeDetailPageContainer extends React.Component {
 
     const previousToken = _.get(auth, 'tokenV3');
     const nextToken = _.get(nextProps, 'auth.tokenV3');
-    const hasStatisticsData = Array.isArray(statisticsData) && statisticsData.length > 0;
-    const nextHasStatisticsData = Array.isArray(nextProps.statisticsData)
-      && nextProps.statisticsData.length > 0;
+    const hasStatisticsData = hasRenderableStatisticsData(statisticsData);
+    const nextHasStatisticsData = hasRenderableStatisticsData(nextProps.statisticsData);
     const enteringMmDashboard = selectedTab !== DETAIL_TABS.MM_DASHBOARD
       && nextProps.selectedTab === DETAIL_TABS.MM_DASHBOARD;
     const tokenBecameAvailable = !previousToken && !!nextToken;
@@ -737,7 +744,7 @@ class ChallengeDetailPageContainer extends React.Component {
             }
             {
               !isEmpty && selectedTab === DETAIL_TABS.MM_DASHBOARD
-              && (!statisticsData || statisticsData.length === 0)
+              && !hasRenderableStatisticsData(statisticsData)
               && (
                 <div styleName="page">
                   {
@@ -748,7 +755,7 @@ class ChallengeDetailPageContainer extends React.Component {
             }
             {
               !isEmpty && selectedTab === DETAIL_TABS.MM_DASHBOARD
-              && statisticsData && statisticsData.length > 0
+              && hasRenderableStatisticsData(statisticsData)
               && (
                 <MMDashboardGraph
                   statisticsData={statisticsData}
@@ -1152,7 +1159,7 @@ function mapStateToProps(state, props) {
   }
   const { auth } = state;
   let statisticsData = extractArrayFromStateSlice(state.challenge.statisticsData, challengeId);
-  if ((!Array.isArray(statisticsData) || !statisticsData.length) && reviewSummations.length) {
+  if (!hasRenderableStatisticsData(statisticsData) && reviewSummations.length) {
     statisticsData = buildStatisticsData(reviewSummations);
   }
   const challenge = state.challenge.details || {};
diff --git a/src/shared/utils/mm-review-summations.js b/src/shared/utils/mm-review-summations.js
index b5973f92c..d910c1ca5 100644
--- a/src/shared/utils/mm-review-summations.js
+++ b/src/shared/utils/mm-review-summations.js
@@ -577,6 +577,10 @@ export function buildStatisticsData(reviewSummations = []) {
     if (!summation) {
       return false;
     }
+    const score = normalizeScoreValue(_.get(summation, 'aggregateScore'));
+    if (_.isNil(score)) {
+      return false;
+    }
     return getSummationScoreClassification(summation).isProvisional;
   });
 
@@ -587,6 +591,19 @@ export function buildStatisticsData(reviewSummations = []) {
       return;
     }
 
+    const timestamp = getSummationTimestamp(summation);
+    const timestampValue = toTimestampValue(timestamp);
+    const score = normalizeScoreValue(_.get(summation, 'aggregateScore'));
+    if (_.isNil(score)) {
+      return;
+    }
+    const scoreType = getSummationScoreClassification(summation);
+    if (includeOnlyProvisional) {
+      if (!scoreType.isProvisional) {
+        return;
+      }
+    }
+
     const handle = getSummationHandle(summation);
     if (!grouped.has(handle)) {
       grouped.set(handle, {
@@ -597,7 +614,6 @@ export function buildStatisticsData(reviewSummations = []) {
     }
 
     const entry = grouped.get(handle);
-
     const rating = getSummationRating(summation);
     if (_.isNil(entry.rating) && !_.isNil(rating)) {
       entry.rating = rating;
@@ -643,20 +659,22 @@ export function buildStatisticsData(reviewSummations = []) {
     entry.submissionsMap.set(submissionId, updatedSubmission);
   });
 
-  return Array.from(grouped.values()).map(entry => ({
-    handle: entry.handle,
-    rating: entry.rating,
-    submissions: Array.from(entry.submissionsMap.values())
-      .map(submission => ({
-        submissionId: submission.submissionId,
-        created: submission.created,
-        createdAt: submission.createdAt,
-        score: submission.score,
-      }))
-      .sort(
-        (a, b) => toTimestampValue(b.createdAt) - toTimestampValue(a.createdAt),
-      ),
-  }));
+  return Array.from(grouped.values())
+    .map(entry => ({
+      handle: entry.handle,
+      rating: entry.rating,
+      submissions: Array.from(entry.submissionsMap.values())
+        .map(submission => ({
+          submissionId: submission.submissionId,
+          created: submission.created,
+          createdAt: submission.createdAt,
+          score: submission.score,
+        }))
+        .sort(
+          (a, b) => toTimestampValue(b.createdAt) - toTimestampValue(a.createdAt),
+        ),
+    }))
+    .filter(entry => Array.isArray(entry.submissions) && entry.submissions.length > 0);
 }
 
 export default {
diff --git a/src/shared/utils/tc.js b/src/shared/utils/tc.js
index d40eef66c..a92ff0849 100644
--- a/src/shared/utils/tc.js
+++ b/src/shared/utils/tc.js
@@ -199,8 +199,10 @@ export function getUnSelectedColors(rating) {
  */
 export function getAuthTokens(req = {}) {
   const cookies = req.cookies || {};
-  let tokenV2 = cookies.tcjwt;
-  let tokenV3 = cookies.tcjwt;
+  // Support both historical cookie names used across environments.
+  const authToken = cookies.tcjwt || cookies.tcJwt;
+  let tokenV2 = authToken;
+  let tokenV3 = authToken;
 
   if (!tokenV2 || isTokenExpired(tokenV2, config.AUTH_DROP_TIME)) {
     tokenV2 = '';