diff --git a/controllers/tracker_controller.go b/controllers/tracker_controller.go
index 630e8ed..acbb16f 100644
--- a/controllers/tracker_controller.go
+++ b/controllers/tracker_controller.go
@@ -38,11 +38,11 @@ func GetScoreByPlayerID(c *gin.Context) {
 	case 200:
 		c.String(200, fmt.Sprintf("%.2f", score))
 	case 404:
-		c.String(200, "<i class=\"bi bi-person-x-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\"></i>")
+		c.String(200, "<i class=\"bi bi-person-x-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\" data-bs-action=\"tooltip\" data-bs-title=\"Spieler nicht gefunden\"></i>")
 	case 503, 504:
-		c.String(statusCode, "<i class=\"bi bi-cloud-slash-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\"></i>")
+		c.String(statusCode, "<i class=\"bi bi-cloud-slash-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\"data-bs-action=\"tooltip\" data-bs-title=\"Tracker nicht erreichbar\"></i>")
 	default:
-		c.String(statusCode, "<i class=\"bi bi-exclamation-circle-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\"></i>")
+		c.String(statusCode, "<i class=\"bi bi-exclamation-circle-fill me-2 text-danger fs-5\" style=\"margin-left: 0.69rem;\" data-bs-action=\"tooltip\" data-bs-title=\"Unbekannter Fehler\"></i>")
 		utils.Logger.Warnf("[SCORE] Invalid request! Player: %s, Score: %f", player.Name, score)
 	}
 }
diff --git a/templates/modals/full_calc.html b/templates/modals/full_calc.html
index 186a42d..fd1820f 100644
--- a/templates/modals/full_calc.html
+++ b/templates/modals/full_calc.html
@@ -23,19 +23,19 @@
                 </div>
                 <div class="row justify-content-center">
                     <div class="col-3 text-center fs-5 me-4 ps-0">
-                        <img src="../static/icons/average.svg" alt="Avg" class="img-fluid me-1 align-top" style="height: 1.8rem; filter: invert(0.85);"/>
+                        <img src="../static/icons/average.svg" alt="Avg" class="img-fluid me-1 align-top" style="height: 1.8rem; filter: invert(0.85);" data-bs-action="tooltip" data-bs-title="Durchschnitt Heim-Team" />
                         <span id="home-avg-score" class="text-warning">
                             <i class="spinner-grow spinner-grow-sm text-secondary align-baseline mx-2" role="status"></i>
                         </span>
                     </div>
                     <div class="col-2 text-center fs-5">
-                        <i class="bi bi-plus-slash-minus me-2"></i>
+                        <i class="bi bi-plus-slash-minus me-2" data-bs-action="tooltip" data-bs-title="Differenz der Durchschnitte" ></i>
                         <span id="diff-score" class="text-warning">
                             <i class="spinner-grow spinner-grow-sm text-secondary align-baseline mx-2" role="status"></i>
                         </span>
                     </div>
                     <div class="col-3 text-center fs-5 ms-4 pe-0">
-                        <img src="../static/icons/average.svg" alt="Avg" class="img-fluid me-1 align-top" style="height: 1.8rem; filter: invert(0.85);"/>
+                        <img src="../static/icons/average.svg" alt="Avg" class="img-fluid me-1 align-top" style="height: 1.8rem; filter: invert(0.85);" data-bs-action="tooltip" data-bs-title="Durchschnitt Gegner-Team" />
                         <span id="opp-avg-score" class="text-warning">
                             <i class="spinner-grow spinner-grow-sm text-secondary align-baseline mx-2" role="status"></i>
                         </span>
@@ -47,7 +47,7 @@
                 <div class="progress w-100" style="height: 30px;" id="fullCalcProgressbar" role="progressbar">
                     <div class="progress-bar progress-bar-striped progress-bar-animated" style="width: 0">Lade...</div>
                 </div>
-                <button type="submit" name="submit" class="btn btn-lg btn-outline-primary" onclick="downloadScreenshot()" hidden>
+                <button type="submit" name="submit" class="btn btn-lg btn-outline-primary" onclick="downloadScreenshot()" data-bs-action="tooltip" data-bs-title="Als Bild herunterladen" hidden>
                     <i class="bi bi-download"></i>
                 </button>
             </div>
@@ -85,6 +85,8 @@
                 score.innerHTML = text;
                 if (!isNaN(parseFloat(text)))
                     score.previousElementSibling.hidden = false;
+                else
+                    initTooltips(score);
                 return text;
             });
     }
@@ -239,7 +241,7 @@
         }
 
         function cleanupStatistic(statisticField) {
-            if (statisticField.innerHTML === spinnerGrow)
+            if (statisticField.innerHTML.trim() === spinnerGrow)
                 statisticField.innerHTML = dash;
         }
 
@@ -299,11 +301,15 @@
 
                 Promise.all(promises).then(_ => {
                     let liItems = homeClanResults.querySelectorAll('li');
-                    liItems[liItems.length - 1].classList.remove('border-bottom');
-                    liItems[liItems.length - 2].classList.remove('border-bottom');
+                    if (liItems.length > 1) {
+                        liItems[liItems.length - 1].classList.remove('border-bottom');
+                        liItems[liItems.length - 2].classList.remove('border-bottom');
+                    }
                     liItems = oppClanResults.querySelectorAll('li');
-                    liItems[liItems.length - 1].classList.remove('border-bottom');
-                    liItems[liItems.length - 2].classList.remove('border-bottom');
+                    if (liItems.length > 1) {
+                        liItems[liItems.length - 1].classList.remove('border-bottom');
+                        liItems[liItems.length - 2].classList.remove('border-bottom');
+                    }
 
                     setSquadNumbers();