diff --git a/src/Controller/Administrative/Teamer/IndexController.php b/src/Controller/Administrative/Teamer/IndexController.php
index 3f679cf..c496fa3 100644
--- a/src/Controller/Administrative/Teamer/IndexController.php
+++ b/src/Controller/Administrative/Teamer/IndexController.php
@@ -2,8 +2,11 @@
 
 namespace App\Controller\Administrative\Teamer;
 
+use App\Entity\Teamer;
+use App\Htmx\HxRedirectResponse;
 use App\Repository\TeamerRepository;
 use App\Service\Common\TeamerFilterHandler;
+use Doctrine\ORM\EntityManagerInterface;
 use Knp\Component\Pager\PaginatorInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
@@ -16,7 +19,8 @@ class IndexController extends AbstractController
     public function __construct(
         protected readonly TeamerFilterHandler $filterHandler,
         private readonly TeamerRepository $teamerRepository,
-        private readonly PaginatorInterface $paginator
+        private readonly PaginatorInterface $paginator,
+        private readonly EntityManagerInterface $entityManager
     ) {
     }
 
@@ -25,11 +29,10 @@ class IndexController extends AbstractController
     public function index(Request $request): Response
     {
         $filterDto = $this->filterHandler->getFilterSettings();
-        $requestedSorting = $request->query->get('sort');
 
         $query = $this
             ->teamerRepository
-            ->getListQuery($filterDto, $requestedSorting)
+            ->getListQuery($filterDto)
         ;
 
         $pagination = $this->paginator->paginate(
@@ -43,4 +46,14 @@ class IndexController extends AbstractController
             'filterDto' => $filterDto,
         ]);
     }
+
+    #[Route('/administrative/teamer/viewed/{uuid}', name: 'app_administrative_teamer_viewed', methods: ['POST'])]
+    #[IsGranted('ROLE_ADMINISTRATIVE')]
+    public function viewed(Teamer $teamer): Response
+    {
+        $teamer->setViewed(true);
+        $this->entityManager->flush();
+
+        return new HxRedirectResponse($this->generateUrl('app_administrative_teamer_index'));
+    }
 }
\ No newline at end of file
diff --git a/src/Repository/TeamerRepository.php b/src/Repository/TeamerRepository.php
index 0288c05..73b6bf2 100644
--- a/src/Repository/TeamerRepository.php
+++ b/src/Repository/TeamerRepository.php
@@ -27,7 +27,7 @@ class TeamerRepository extends ServiceEntityRepository
         parent::__construct($registry, Teamer::class);
     }
 
-    public function getListQuery(TeamerFilterDto $filterDto, ?string $requestedSorting = null): Query
+    public function getListQuery(TeamerFilterDto $filterDto): Query
     {
         $qb = $this->createQueryBuilder('teamer');
 
@@ -38,15 +38,10 @@ class TeamerRepository extends ServiceEntityRepository
             ->leftJoin('teamer.licenses', 'license')
             ->leftJoin('teamer.feedback', 'feedback')
             ->leftJoin('teamer.user', 'user')
+            ->addOrderBy('teamer.viewed', 'asc')
+            ->addOrderBy('teamer.lastName', 'asc')
         ;
 
-        if (null === $requestedSorting) {
-            $qb
-                ->orderBy('teamer.viewed', 'asc')
-                ->addOrderBy('teamer.lastName', 'asc')
-            ;
-        }
-
         if (null !== $filterDto->getName()) {
             $qb
                 ->andWhere($qb->expr()->orX(
diff --git a/templates/administrative/teamer/index.html.twig b/templates/administrative/teamer/index.html.twig
index d7caabc..e6baf20 100644
--- a/templates/administrative/teamer/index.html.twig
+++ b/templates/administrative/teamer/index.html.twig
@@ -94,6 +94,13 @@
                         </td>
                         <td>
                             <div class="flex items-center space-x-1 justify-end">
+                                {% if not teamer.viewed %}
+                                    <button type="button"
+                                            hx-post="{{ path('app_administrative_teamer_viewed', { 'uuid': teamer.uuid }) }}"
+                                            title="Teamer als gesichtet markieren">
+                                        {{ icon('check') }}
+                                    </button>
+                                {% endif %}
                                 {% if is_granted('CAN_IMPERSONATE', teamer.user) %}
                                     <a href="{{ path('app_teamer_index', { '_switch_user': teamer.user.email }) }}" title="Als Teamer:in maskieren">
                                         {{ icon('mask') }}