diff --git a/schema/rest/types/player.xsd b/schema/rest/types/player.xsd
index e6d0ad4..e598e12 100644
--- a/schema/rest/types/player.xsd
+++ b/schema/rest/types/player.xsd
@@ -8,5 +8,7 @@
         <xs:attribute type="xs:string" name="name" use="required"/>
         <xs:attribute type="sportUrn" name="sport" use="required"/>
         <xs:attribute type="xs:string" name="full_name"/>
+        <!-- -1 unknown, 0 not underage, 1 underage; same encoding as team@underage -->
+        <xs:attribute type="xs:integer" name="underage"/>
     </xs:complexType>
 </xs:schema>
diff --git a/test/fixtures/rest/competitor/competitor_profile.xml b/test/fixtures/rest/competitor/competitor_profile.xml
index 5934f1b..40dc7cf 100644
--- a/test/fixtures/rest/competitor/competitor_profile.xml
+++ b/test/fixtures/rest/competitor/competitor_profile.xml
@@ -5,6 +5,6 @@
         <sport id="od:sport:1" name="League of Legends" abbreviation="LoL"/>
     </competitor>
     <players>
-        <player id="od:player:9001" name="Player One" sport="od:sport:1" full_name="Player One Full"/>
+        <player id="od:player:9001" name="Player One" sport="od:sport:1" full_name="Player One Full" underage="-1"/>
     </players>
 </competitor_profile>
diff --git a/test/fixtures/rest/player/player_profile.xml b/test/fixtures/rest/player/player_profile.xml
index 92be634..0e6524c 100644
--- a/test/fixtures/rest/player/player_profile.xml
+++ b/test/fixtures/rest/player/player_profile.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <player_profile generated_at="2026-08-26T12:00:00">
-    <player id="od:player:9001" name="Player One" sport="od:sport:1"/>
+    <player id="od:player:9001" name="Player One" sport="od:sport:1" underage="1"/>
 </player_profile>