diff --git a/src/combination/dimensions.js b/src/combination/dimensions.js
index 4081b7b0e..df676d995 100644
--- a/src/combination/dimensions.js
+++ b/src/combination/dimensions.js
@@ -9,24 +9,24 @@ import { getInputIds } from './inputs.js'
 export const COMBINATION_DIMENSIONS = [
   {
     dimension: 'task',
-    propName: 'tasks',
     idName: 'taskId',
     rankName: 'taskRank',
   },
   {
     dimension: 'runner',
-    propName: 'runners',
     idName: 'runnerId',
     rankName: 'runnerRank',
   },
   {
     dimension: 'system',
-    propName: 'systems',
     idName: 'systemId',
     rankName: 'systemRank',
   },
 ]
 
 export const N_COMBINATION_DIMENSIONS = [
-  { dimension: 'input', getIds: getInputIds },
+  {
+    dimension: 'input',
+    getIds: getInputIds,
+  },
 ]
diff --git a/src/combination/group.js b/src/combination/group.js
index 6027dde62..5f433c59b 100644
--- a/src/combination/group.js
+++ b/src/combination/group.js
@@ -4,29 +4,20 @@ import { getMean } from '../stats/sum.js'
 
 import { COMBINATION_DIMENSIONS } from './dimensions.js'
 
-// Group combinations per dimension.
-// Each dimension is assigned to a top-level result.dimensions.* property.
-// It includes its mean speed and rank.
-// Add `result.*` properties based on grouping combinations by dimension.
+// Add `combination.*Rank` then sort combinations based on it.
 export const groupResultCombinations = function (result) {
-  const { combinations: combinationsA, dimensions } = groupDimensionInfos(
+  const { combinations: combinationsA } = groupDimensionInfos(
     result.combinations,
   )
   const combinationsB = sortCombinations(combinationsA)
-  return { ...result, combinations: combinationsB, dimensions }
+  return { ...result, combinations: combinationsB }
 }
 
 const groupDimensionInfos = function (combinations) {
-  return COMBINATION_DIMENSIONS.reduce(addDimensionInfo, {
-    combinations,
-    dimensions: {},
-  })
+  return COMBINATION_DIMENSIONS.reduce(addDimensionInfo, { combinations })
 }
 
-const addDimensionInfo = function (
-  { combinations, dimensions },
-  { propName, idName, rankName },
-) {
+const addDimensionInfo = function ({ combinations }, { idName, rankName }) {
   const ids = getDimensionIds(combinations, idName)
   const dimension = ids.map((id) => getDimension({ combinations, id, idName }))
   const dimensionA = sortOn(dimension, 'mean')
@@ -34,10 +25,7 @@ const addDimensionInfo = function (
   const combinationsA = combinations.map((combination) =>
     addRank({ combination, dimension: dimensionA, idName, rankName }),
   )
-  return {
-    combinations: combinationsA,
-    dimensions: { ...dimensions, [propName]: dimensionA },
-  }
+  return { combinations: combinationsA }
 }
 
 const getDimensionIds = function (combinations, idName) {
diff --git a/src/report/normalize/common.js b/src/report/normalize/common.js
index c734e6d6a..5113479b6 100644
--- a/src/report/normalize/common.js
+++ b/src/report/normalize/common.js
@@ -4,7 +4,7 @@ import { omitSystemProps } from '../../system/omit.js'
 import { normalizeTimestamp } from '../../system/timestamp.js'
 
 import { omitCombinationsProps } from './omit.js'
-import { addCombinationsTitles, addDimensionsTitles } from './titles_add.js'
+import { addCombinationsTitles } from './titles_add.js'
 import { padTitles } from './titles_pad.js'
 
 // Add report-specific properties to a result that are not in `combinations` nor
@@ -63,13 +63,12 @@ export const normalizeCombEach = function (
   },
   { titles },
 ) {
-  const resultA = addDimensionsTitles(result, titles, showTitles)
-  const resultB = addCombinationsTitles(resultA, titles, showTitles)
-  const resultC = padTitles({ result: resultB })
-  const resultD = omitCombinationsProps(resultC, {
+  const resultA = addCombinationsTitles(result, titles, showTitles)
+  const resultB = padTitles({ result: resultA })
+  const resultC = omitCombinationsProps(resultB, {
     showPrecision,
     showDiff,
     debugStats,
   })
-  return resultD
+  return resultC
 }
diff --git a/src/report/normalize/titles_add.js b/src/report/normalize/titles_add.js
index 0f76cd96c..d725e7f36 100644
--- a/src/report/normalize/titles_add.js
+++ b/src/report/normalize/titles_add.js
@@ -1,5 +1,3 @@
-import mapObj from 'map-obj'
-
 import { COMBINATION_DIMENSIONS } from '../../combination/dimensions.js'
 
 // Allow users to rename identifiers from any combination dimension: tasks,
@@ -37,24 +35,6 @@ const getIdName = function ({ idName }) {
   return idName
 }
 
-// Add `result.dimensions.*.title`
-export const addDimensionsTitles = function (
-  { dimensions, ...result },
-  titles,
-  showTitles,
-) {
-  const titlesA = showTitles ? titles : {}
-  const dimensionsA = mapObj(dimensions, (dimension, items) => [
-    dimension,
-    addDimensionTitle(items, titlesA),
-  ])
-  return { ...result, dimensions: dimensionsA }
-}
-
-const addDimensionTitle = function (items, titles) {
-  return items.map((item) => addTitle(item, 'id', titles))
-}
-
 // Add `footer.systems[*].title`
 export const addFooterTitles = function (
   { systems, ...footer },