diff --git a/source/CourtRenderer.mc b/source/CourtRenderer.mc
new file mode 100644
index 0000000..6e5d082
--- /dev/null
+++ b/source/CourtRenderer.mc
@@ -0,0 +1,44 @@
+import Toybox.Lang;
+import Toybox.Graphics;
+
+// Draws a top-down padel court centered at (cx, cy) and a yellow serve ball
+// in the given quadrant. Half-width HW and half-height HH keep it inside the
+// central band of the round screen.
+class CourtRenderer {
+    private const HW = 60;   // half court width (px)
+    private const HH = 78;   // half court height (px)
+    private const BALL_R = 6;
+
+    public function draw(dc as Graphics.Dc, cx as Number, cy as Number,
+                         quadrant as Number, showBall as Boolean) as Void {
+        var left = cx - HW;
+        var top = cy - HH;
+
+        dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_TRANSPARENT);
+        dc.setPenWidth(2);
+        dc.drawRectangle(left, top, 2 * HW, 2 * HH);         // outer court
+        dc.drawLine(cx, top, cx, cy + HH);                    // center service line
+
+        dc.setPenWidth(1);
+        dc.drawLine(left, cy - HH / 2, left + 2 * HW, cy - HH / 2); // upper service line
+        dc.drawLine(left, cy + HH / 2, left + 2 * HW, cy + HH / 2); // lower service line
+
+        dc.setPenWidth(3);
+        dc.drawLine(left, cy, left + 2 * HW, cy);             // net
+
+        if (showBall) {
+            var pos = _ballPos(quadrant, cx, cy);
+            dc.setColor(Graphics.COLOR_YELLOW, Graphics.COLOR_TRANSPARENT);
+            dc.fillCircle(pos[0], pos[1], BALL_R);
+        }
+    }
+
+    private function _ballPos(quadrant as Number, cx as Number, cy as Number) as Array<Number> {
+        var dx = HW / 2;
+        var dy = HH / 2;
+        if (quadrant == QUAD_BOTTOM_RIGHT) { return [cx + dx, cy + dy]; }
+        if (quadrant == QUAD_BOTTOM_LEFT)  { return [cx - dx, cy + dy]; }
+        if (quadrant == QUAD_UPPER_LEFT)   { return [cx - dx, cy - dy]; }
+        return [cx + dx, cy - dy]; // QUAD_UPPER_RIGHT
+    }
+}