diff --git a/src/eva2/json/OptimizationRun.java b/src/eva2/json/OptimizationRun.java
new file mode 100644
index 00000000..7f2a1c79
--- /dev/null
+++ b/src/eva2/json/OptimizationRun.java
@@ -0,0 +1,19 @@
+package eva2.json;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ */
+public class OptimizationRun {
+    List<Double> fitness;
+
+    public OptimizationRun() {
+        this.fitness = new ArrayList<Double>();
+    }
+
+    public void addFitnessValue(double value) {
+        this.fitness.add(value);
+    }
+}