diff --git a/src/api/opening/opening.ts b/src/api/opening/opening.ts
index 8ac24884..d817bec0 100644
--- a/src/api/opening/opening.ts
+++ b/src/api/opening/opening.ts
@@ -1,59 +1,20 @@
 import { buildUrl } from '../utils'
 
 // API Types for opening drill logging
-export interface OpeningDrillSelection {
+
+export interface LogOpeningDrillRequest {
   opening_fen: string
   side_played: string
-}
-
-export interface SelectOpeningDrillsRequest {
-  openings: OpeningDrillSelection[]
   opponent: string
   num_moves: number
-  num_drills: number
-}
-
-export interface SelectOpeningDrillsResponse {
-  session_id: string
-}
-
-export interface SubmitOpeningDrillRequest {
-  session_id: string
-  opening_fen: string
-  side_played: string
   moves_played_uci: string[]
 }
 
-// API function to log opening drill selections and start a session
-export const selectOpeningDrills = async (
-  request: SelectOpeningDrillsRequest,
-): Promise<SelectOpeningDrillsResponse> => {
-  const res = await fetch(buildUrl('opening/select_opening_drills'), {
-    method: 'POST',
-    headers: {
-      Accept: 'application/json',
-      'Content-Type': 'application/json',
-    },
-    body: JSON.stringify(request),
-  })
-
-  if (res.status === 401) {
-    throw new Error('Unauthorized')
-  }
-
-  if (!res.ok) {
-    throw new Error(`Failed to select opening drills: ${res.statusText}`)
-  }
-
-  const data = await res.json()
-  return data as SelectOpeningDrillsResponse
-}
-
-// API function to submit a completed opening drill
-export const submitOpeningDrill = async (
-  request: SubmitOpeningDrillRequest,
+// API function to log a completed opening drill
+export const logOpeningDrill = async (
+  request: LogOpeningDrillRequest,
 ): Promise<void> => {
-  const res = await fetch(buildUrl('opening/record_opening_drill'), {
+  const res = await fetch(buildUrl('opening/log_opening_drill'), {
     method: 'POST',
     headers: {
       Accept: 'application/json',
@@ -67,6 +28,6 @@ export const submitOpeningDrill = async (
   }
 
   if (!res.ok) {
-    throw new Error(`Failed to submit opening drill: ${res.statusText}`)
+    throw new Error(`Failed to log opening drill: ${res.statusText}`)
   }
 }
diff --git a/src/components/Analysis/MoveMap.tsx b/src/components/Analysis/MoveMap.tsx
index 27b23b83..70ed1ab9 100644
--- a/src/components/Analysis/MoveMap.tsx
+++ b/src/components/Analysis/MoveMap.tsx
@@ -330,7 +330,7 @@ export const MoveMap: React.FC<Props> = ({
               tickMargin={0}
               tickLine={false}
               tickFormatter={(value) => `${value}%`}
-              domain={([dataMin, dataMax]) => [0, dataMax > 60 ? 100 : 60]}
+              domain={([dataMin, dataMax]) => [0, dataMax > 40 ? 100 : 40]}
             >
               <Label
                 value="← Unlikely"
diff --git a/src/components/Openings/OpeningSelectionModal.tsx b/src/components/Openings/OpeningSelectionModal.tsx
index bf49962f..4296fe44 100644
--- a/src/components/Openings/OpeningSelectionModal.tsx
+++ b/src/components/Openings/OpeningSelectionModal.tsx
@@ -23,7 +23,6 @@ import {
   trackDrillConfigurationCompleted,
 } from 'src/lib/analytics'
 import { MAIA_MODELS_WITH_NAMES } from 'src/constants/common'
-import { selectOpeningDrills } from 'src/api/opening'
 
 type MobileTab = 'browse' | 'selected'
 
@@ -1073,66 +1072,38 @@ export const OpeningSelectionModal: React.FC<Props> = ({
     if (selections.length > 0) {
       const drillSequence = generateDrillSequence(selections, drillCount)
 
-      try {
-        // Prepare API request data
-        const openings = selections.map((selection) => ({
-          opening_fen: selection.variation
-            ? selection.variation.fen
-            : selection.opening.fen,
-          side_played: selection.playerColor,
-        }))
-
-        // Call the backend API to log opening selections and get session ID
-        const response = await selectOpeningDrills({
-          openings,
-          opponent: selectedMaiaVersion.id,
-          num_moves: targetMoveNumber,
-          num_drills: drillCount,
-        })
-
-        const configuration: DrillConfiguration = {
-          selections,
-          drillCount,
-          drillSequence,
-          sessionId: response.session_id,
-        }
+      const configuration: DrillConfiguration = {
+        selections,
+        drillCount,
+        drillSequence,
+      }
 
-        // Track drill configuration completion
-        const uniqueOpenings = new Set(selections.map((s) => s.opening.id)).size
-        const averageTargetMoves =
-          selections.reduce((sum, s) => sum + s.targetMoveNumber, 0) /
-          selections.length
-        const maiaVersionsUsed = [
-          ...new Set(selections.map((s) => s.maiaVersion)),
-        ]
-        const colorDistribution = selections.reduce(
-          (acc, s) => {
-            acc[s.playerColor]++
-            return acc
-          },
-          { white: 0, black: 0 },
-        )
+      // Track drill configuration completion
+      const uniqueOpenings = new Set(selections.map((s) => s.opening.id)).size
+      const averageTargetMoves =
+        selections.reduce((sum, s) => sum + s.targetMoveNumber, 0) /
+        selections.length
+      const maiaVersionsUsed = [
+        ...new Set(selections.map((s) => s.maiaVersion)),
+      ]
+      const colorDistribution = selections.reduce(
+        (acc, s) => {
+          acc[s.playerColor]++
+          return acc
+        },
+        { white: 0, black: 0 },
+      )
 
-        trackDrillConfigurationCompleted(
-          selections.length,
-          drillCount,
-          uniqueOpenings,
-          averageTargetMoves,
-          maiaVersionsUsed,
-          colorDistribution,
-        )
+      trackDrillConfigurationCompleted(
+        selections.length,
+        drillCount,
+        uniqueOpenings,
+        averageTargetMoves,
+        maiaVersionsUsed,
+        colorDistribution,
+      )
 
-        onComplete(configuration)
-      } catch (error) {
-        console.error('Failed to start drilling session:', error)
-        // Still allow the drill to start even if API call fails
-        const configuration: DrillConfiguration = {
-          selections,
-          drillCount,
-          drillSequence,
-        }
-        onComplete(configuration)
-      }
+      onComplete(configuration)
     }
   }
 
diff --git a/src/hooks/useOpeningDrillController/useOpeningDrillController.ts b/src/hooks/useOpeningDrillController/useOpeningDrillController.ts
index 06c1be49..765ddbd6 100644
--- a/src/hooks/useOpeningDrillController/useOpeningDrillController.ts
+++ b/src/hooks/useOpeningDrillController/useOpeningDrillController.ts
@@ -1,7 +1,7 @@
 import { useState, useMemo, useCallback, useEffect, useRef } from 'react'
 import { Chess } from 'chess.ts'
 import { getGameMove } from 'src/api/play/play'
-import { submitOpeningDrill } from 'src/api/opening'
+import { logOpeningDrill } from 'src/api/opening'
 import { useTreeController } from '../useTreeController'
 import { useLocalStorage } from '../useLocalStorage'
 import {
@@ -530,21 +530,20 @@ export const useOpeningDrillController = (
           currentMove: 'Preparing analysis...',
         })
 
-        // Submit drill data to backend if session ID is available
-        if (configuration.sessionId) {
-          try {
-            await submitOpeningDrill({
-              session_id: configuration.sessionId,
-              opening_fen: drillGame.selection.variation
-                ? drillGame.selection.variation.fen
-                : drillGame.selection.opening.fen,
-              side_played: drillGame.selection.playerColor,
-              moves_played_uci: drillGame.moves,
-            })
-          } catch (error) {
-            console.error('Failed to submit drill to backend:', error)
-            // Continue even if backend submission fails
-          }
+        // Submit drill data to backend
+        try {
+          await logOpeningDrill({
+            opening_fen: drillGame.selection.variation
+              ? drillGame.selection.variation.fen
+              : drillGame.selection.opening.fen,
+            side_played: drillGame.selection.playerColor,
+            opponent: drillGame.selection.maiaVersion,
+            num_moves: drillGame.selection.targetMoveNumber,
+            moves_played_uci: drillGame.moves,
+          })
+        } catch (error) {
+          console.error('Failed to log drill to backend:', error)
+          // Continue even if backend submission fails
         }
 
         // Ensure all positions in the drill are analyzed to sufficient depth
@@ -593,23 +592,24 @@ export const useOpeningDrillController = (
         setIsAnalyzingDrill(false)
       }
     },
-    [currentDrillGame, evaluateDrillPerformance, configuration.sessionId],
+    [currentDrillGame, evaluateDrillPerformance],
   )
 
   const moveToNextDrill = useCallback(async () => {
-    // Submit drill data to backend if session ID is available
-    if (configuration.sessionId && currentDrillGame) {
+    // Submit drill data to backend
+    if (currentDrillGame) {
       try {
-        await submitOpeningDrill({
-          session_id: configuration.sessionId,
+        await logOpeningDrill({
           opening_fen: currentDrillGame.selection.variation
             ? currentDrillGame.selection.variation.fen
             : currentDrillGame.selection.opening.fen,
           side_played: currentDrillGame.selection.playerColor,
+          opponent: currentDrillGame.selection.maiaVersion,
+          num_moves: currentDrillGame.selection.targetMoveNumber,
           moves_played_uci: currentDrillGame.moves,
         })
       } catch (error) {
-        console.error('Failed to submit drill to backend:', error)
+        console.error('Failed to log drill to backend:', error)
       }
     }