diff --git a/axelrod/result_set.py b/axelrod/result_set.py
index db5921c7b..3d0934a94 100644
--- a/axelrod/result_set.py
+++ b/axelrod/result_set.py
@@ -709,6 +709,8 @@ def summarise(self):
         median_scores = map(np.nanmedian, self.normalised_scores)
         median_wins = map(np.nanmedian, self.wins)
 
+        original_index = [index for index, _player in enumerate(self.players)]
+
         self.player = namedtuple(
             "Player",
             [
@@ -718,6 +720,7 @@ def summarise(self):
                 "Cooperation_rating",
                 "Wins",
                 "Initial_C_rate",
+                "Original_index",
                 "CC_rate",
                 "CD_rate",
                 "DC_rate",
@@ -767,6 +770,7 @@ def summarise(self):
                 self.cooperating_rating,
                 median_wins,
                 self.initial_cooperation_rate,
+                original_index,
             )
         )
 
diff --git a/axelrod/tests/unit/test_resultset.py b/axelrod/tests/unit/test_resultset.py
index 33b1e7f78..586d38603 100644
--- a/axelrod/tests/unit/test_resultset.py
+++ b/axelrod/tests/unit/test_resultset.py
@@ -647,6 +647,7 @@ def test_summarise_regression_test(self):
                 0.0,
                 3.0,
                 0.0,
+                1,
                 0.0,
                 0.0,
                 0.4000000000000001,
@@ -663,6 +664,7 @@ def test_summarise_regression_test(self):
                 0.7,
                 0.0,
                 1.0,
+                2,
                 0.6666666666666666,
                 0.03333333333333333,
                 0.0,
@@ -679,6 +681,7 @@ def test_summarise_regression_test(self):
                 0.7,
                 0.0,
                 1.0,
+                3,
                 0.6666666666666666,
                 0.03333333333333333,
                 0.0,
@@ -695,6 +698,7 @@ def test_summarise_regression_test(self):
                 1.0,
                 0.0,
                 1.0,
+                0,
                 0.6666666666666666,
                 0.3333333333333333,
                 0.0,
@@ -724,7 +728,7 @@ def test_write_summary(self):
             csvreader = csv.reader(csvfile)
             for row in csvreader:
                 ranked_names.append(row[1])
-                self.assertEqual(len(row), 14)
+                self.assertEqual(len(row), 15)
         self.assertEqual(ranked_names[0], "Name")
         self.assertEqual(ranked_names[1:], rs.ranked_names)
 
diff --git a/docs/tutorials/new_to_game_theory_and_or_python/summarising_tournaments.rst b/docs/tutorials/new_to_game_theory_and_or_python/summarising_tournaments.rst
index ac97edd6a..834d6bf08 100644
--- a/docs/tutorials/new_to_game_theory_and_or_python/summarising_tournaments.rst
+++ b/docs/tutorials/new_to_game_theory_and_or_python/summarising_tournaments.rst
@@ -18,10 +18,10 @@ that summarises the results of the tournament::
     >>> summary = results.summarise()
     >>> import pprint
     >>> pprint.pprint(summary)
-    [Player(Rank=0, Name='Defector', Median_score=2.6..., Cooperation_rating=0.0, Wins=3.0, Initial_C_rate=0.0, CC_rate=...),
-     Player(Rank=1, Name='Tit For Tat', Median_score=2.3..., Cooperation_rating=0..., Wins=0.0, Initial_C_rate=1.0, CC_rate=...),
-     Player(Rank=2, Name='Grudger', Median_score=2.3..., Cooperation_rating=0..., Wins=0.0, Initial_C_rate=1.0, CC_rate=...),
-     Player(Rank=3, Name='Cooperator', Median_score=2.0..., Cooperation_rating=1.0, Wins=0.0, Initial_C_rate=1.0, CC_rate=...)]
+    [Player(Rank=0, Name='Defector', Median_score=2.6..., Cooperation_rating=0.0, Wins=3.0, Initial_C_rate=0.0, Original_index=1, CC_rate=...),
+     Player(Rank=1, Name='Tit For Tat', Median_score=2.3..., Cooperation_rating=0..., Wins=0.0, Initial_C_rate=1.0, Original_index=2, CC_rate=...),
+     Player(Rank=2, Name='Grudger', Median_score=2.3..., Cooperation_rating=0..., Wins=0.0, Initial_C_rate=1.0, Original_index=3, CC_rate=...),
+     Player(Rank=3, Name='Cooperator', Median_score=2.0..., Cooperation_rating=1.0, Wins=0.0, Initial_C_rate=1.0, Original_index=0, CC_rate=...)]
 
 It is also possible to write this data directly to a csv file using the
 `write_summary` method::
@@ -32,7 +32,7 @@ It is also possible to write this data directly to a csv file using the
     ...     csvreader = csv.reader(outfile)
     ...     for row in csvreader:
     ...         print(row)
-    ['Rank', 'Name', 'Median_score', 'Cooperation_rating', 'Wins', 'Initial_C_rate', 'CC_rate', 'CD_rate', 'DC_rate', 'DD_rate', 'CC_to_C_rate', 'CD_to_C_rate', 'DC_to_C_rate', 'DD_to_C_rate']
+    ['Rank', 'Name', 'Median_score', 'Cooperation_rating', 'Wins', 'Initial_C_rate', 'Original_index', 'CC_rate', 'CD_rate', 'DC_rate', 'DD_rate', 'CC_to_C_rate', 'CD_to_C_rate', 'DC_to_C_rate', 'DD_to_C_rate']
     ['0', 'Defector', ...]
     ['1', 'Tit For Tat', ...]
     ['2', 'Grudger', ...]