diff --git a/src/main/java/BowlingGameCalculator.java b/src/main/java/BowlingGameCalculator.java
index 84210ca..ca7a74f 100644
--- a/src/main/java/BowlingGameCalculator.java
+++ b/src/main/java/BowlingGameCalculator.java
@@ -1,5 +1,13 @@
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class BowlingGameCalculator {
     public int score(String playerResult) {
-        return 0;
+        Matcher singleDigit = Pattern.compile("\\d").matcher(playerResult);
+        int playerScore = 0;
+        while (singleDigit.find()) {
+            playerScore += Integer.parseInt(singleDigit.group());
+        }
+        return playerScore;
     }
 }
diff --git a/target/classes/BowlingGameCalculator.class b/target/classes/BowlingGameCalculator.class
index 069817a..2f923a4 100644
Binary files a/target/classes/BowlingGameCalculator.class and b/target/classes/BowlingGameCalculator.class differ
diff --git a/target/test-classes/BowlingCalculatorTest.class b/target/test-classes/BowlingCalculatorTest.class
index d29062d..28252a4 100644
Binary files a/target/test-classes/BowlingCalculatorTest.class and b/target/test-classes/BowlingCalculatorTest.class differ