diff --git a/backend/controllers/matchController.js b/backend/controllers/matchController.js
index 34899a65..cf32fcf1 100755
--- a/backend/controllers/matchController.js
+++ b/backend/controllers/matchController.js
@@ -247,3 +247,9 @@ export const getTtrPreviewPlayers = async (req, res) => {
         return res.status(error.statusCode || 500).json({ error: error.message || 'TTR-Werte konnten nicht geladen werden' });
     }
 };
+
+export const getStandaloneTtrPreviewPlayers = async (req, res) => {
+    // The literal /ttr-preview/standalone route has no :matchId parameter.
+    req.params.matchId = 'standalone';
+    return getTtrPreviewPlayers(req, res);
+};
diff --git a/backend/routes/matchRoutes.js b/backend/routes/matchRoutes.js
index c858e45b..e073ca79 100755
--- a/backend/routes/matchRoutes.js
+++ b/backend/routes/matchRoutes.js
@@ -1,5 +1,5 @@
 import express from 'express';
-import { uploadCSV, createManualMatch, getLeaguesForCurrentSeason, getMatchesForLeagues, getMatchesForLeague, getLeagueTable, fetchLeagueTableFromMyTischtennis, updateMatchPlayers, getPlayerMatchStats, getMatchPlayers, getTtrPreviewPlayers } from '../controllers/matchController.js';
+import { uploadCSV, createManualMatch, getLeaguesForCurrentSeason, getMatchesForLeagues, getMatchesForLeague, getLeagueTable, fetchLeagueTableFromMyTischtennis, updateMatchPlayers, getPlayerMatchStats, getMatchPlayers, getTtrPreviewPlayers, getStandaloneTtrPreviewPlayers } from '../controllers/matchController.js';
 import { authenticate } from '../middleware/authMiddleware.js';
 import { authorize } from '../middleware/authorizationMiddleware.js';
 import multer from 'multer';
@@ -17,7 +17,7 @@ router.get('/leagues/:clubId/table/:leagueId', authenticate, authorize('schedule
 router.post('/leagues/:clubId/table/:leagueId/fetch', authenticate, authorize('mytischtennis', 'write'), fetchLeagueTableFromMyTischtennis);
 router.get('/:clubId/players', authenticate, authorize('schedule', 'read'), getMatchPlayers);
 router.patch('/:matchId/players', authenticate, authorize('schedule', 'write'), updateMatchPlayers);
-router.post('/ttr-preview/standalone', authenticate, authorize('schedule', 'read'), getTtrPreviewPlayers);
+router.post('/ttr-preview/standalone', authenticate, authorize('schedule', 'read'), getStandaloneTtrPreviewPlayers);
 router.post('/:matchId/ttr-preview', authenticate, authorize('schedule', 'read'), getTtrPreviewPlayers);
 router.get('/leagues/:clubId/stats/:leagueId', authenticate, authorize('schedule', 'read'), getPlayerMatchStats);
 
diff --git a/backend/tests/ttrPreviewController.node.test.mjs b/backend/tests/ttrPreviewController.node.test.mjs
new file mode 100644
index 00000000..c4bc75f7
--- /dev/null
+++ b/backend/tests/ttrPreviewController.node.test.mjs
@@ -0,0 +1,39 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import vm from 'node:vm';
+
+const source = readFileSync(new URL('../controllers/matchController.js', import.meta.url), 'utf8')
+    .replace(/^import .*;\n/gm, '')
+    .replace(/^export const /gm, 'const ');
+
+test('the literal standalone route resolves players without a match lookup or cache mutation', async () => {
+    const calls = [];
+    const context = vm.createContext({
+        console,
+        Op: { ne: Symbol('ne') },
+        Match: { findByPk() { throw new Error('Standalone must not look up a saved match'); } },
+        sequelize: { query() { throw new Error('Standalone must not access the match cache'); } },
+        Member: { findAll: async () => [] },
+        Club: { findAll: async () => [] },
+        checkAccess: async (_token, clubId) => { assert.equal(clubId, 7); },
+        myTischtennisService: {}, myTischtennisClient: {},
+        resolveTtrPreview: async input => {
+            calls.push(input);
+            return { players: [{ side: 'home', name: 'Anna Wolf', ttr: 680 }], diagnostics: [] };
+        },
+    });
+    vm.runInContext(source + '\nglobalThis.standaloneHandler = getStandaloneTtrPreviewPlayers;', context);
+    const req = { params: {}, headers: { authcode: 'test-token' }, body: {
+        clubId: 7, homePlayers: [{ firstname: 'Anna', lastname: 'Wolf' }],
+    }, user: { id: 3 } };
+    let payload;
+    const res = {
+        status(code) { assert.fail(`Unexpected HTTP ${code}`); },
+        json(body) { payload = body; },
+    };
+    await context.standaloneHandler(req, res);
+    assert.equal(calls.length, 1);
+    assert.equal(calls[0].homePlayers[0].firstname, 'Anna');
+    assert.equal(payload.players[0].ttr, 680);
+});