Update controller.js

www/js/pages/tennis/controller.js

@@ -121,7 +121,7 @@
         prediction.prediction_win_first,
         prediction.prediction_win_second
       ];
-      percentages.sort();
+      percentages.sort(function(a, b){return a-b});
       if (percentages.indexOf(value) === 1) {
         return "main-prediction";
       }
@@ -154,7 +154,7 @@
         'green-tick'
       ];
 
-      percentages.sort();
+      percentages.sort(function(a, b){return a-b});
       var predictionWin = null;
       if (prediction.winner) {
         predictionWin = prediction.prediction_win_second;