diff --git a/LabPSA_1/tennis.py b/LabPSA_1/tennis.py
new file mode 100644
index 0000000..9b9f13a
--- /dev/null
+++ b/LabPSA_1/tennis.py
@@ -0,0 +1,25 @@
+import random
+
+ann_won = 0
+for _ in range(10000):
+    pointsAnn = 0
+    pointsDan = 0
+    ann_going = random.randint(0,1)
+    while(pointsDan <= 25 and pointsAnn <= 25):
+        while ann_going:
+            x = random.uniform(0, 1)
+            if x > 0.3:
+                pointsAnn += 1
+            else:
+                ann_going = 0
+                pointsDan += 1
+        while not ann_going:
+            x = random.uniform(0, 1)
+            if x > 0.5:
+                pointsDan += 1
+            else:
+                ann_going = 1
+                pointsAnn += 1
+    if pointsAnn > pointsDan:
+        ann_won += 1
+print(ann_won/10000)