diff --git a/openfut-adapter-fifa17/src/fut/sbc.rs b/openfut-adapter-fifa17/src/fut/sbc.rs
index 907ddc7..f5bc9b5 100644
--- a/openfut-adapter-fifa17/src/fut/sbc.rs
+++ b/openfut-adapter-fifa17/src/fut/sbc.rs
@@ -178,9 +178,15 @@ impl std::error::Error for SbcWireError {}
 
 /// Extract FIFA wire item ids from a saved/submitted challenge squad.
 ///
-/// Retail request captures for this body are unavailable. The parser therefore accepts
-/// only the two already-proven FIFA 17 squad containers: a normal `players` array or the
-/// SBC `squad` array. Within either, only `itemData.id` is interpreted.
+/// The exact retail challenge-squad body is now captured (2026-08-18 Gate C,
+/// `PUT /ut/game/fifa17/sbs/challenge/101/squad`): a fixed 23-entry `players`
+/// array of `{index, itemData:{id, dream}}` (empty slots carry `id == 0`),
+/// alongside sibling `chemistry`, `rating`, `formation`, and a `manager` array
+/// of `{id, dream}`. Only `players[].itemData.id` selects the consumed cards;
+/// the manager, chemistry, rating, formation, dream, and index fields are
+/// presentation/validation hints and are never consumed. The `squad` array
+/// container remains accepted for the alternate proven shape. Within either,
+/// only non-zero `itemData.id` values are interpreted.
 pub fn parse_wire_item_ids(body: &[u8]) -> Result<Vec<i64>, SbcWireError> {
     let root: Value =
         serde_json::from_slice(body).map_err(|error| SbcWireError::Json(error.to_string()))?;
@@ -259,4 +265,49 @@ mod tests {
             Err(SbcWireError::Json(_))
         ));
     }
+
+    #[test]
+    fn parser_matches_captured_retail_challenge_squad_body() {
+        // Verbatim shape from the 2026-08-18 Gate C retail capture of
+        // PUT /ut/game/fifa17/sbs/challenge/101/squad (11 filled + 12 empty
+        // slots, plus manager/chemistry/rating/formation siblings). Only the 11
+        // non-zero player itemData.id values are consumed, in wire order; the
+        // manager and all presentation fields are ignored.
+        let retail = br#"{"chemistry":21,"rating":86,"formation":"f433",
+            "manager":[{"id":100000427,"dream":false}],
+            "players":[
+              {"index":0,"itemData":{"id":100004227,"dream":false}},
+              {"index":1,"itemData":{"id":100004233,"dream":false}},
+              {"index":2,"itemData":{"id":100001317,"dream":false}},
+              {"index":3,"itemData":{"id":100001531,"dream":false}},
+              {"index":4,"itemData":{"id":100000966,"dream":false}},
+              {"index":5,"itemData":{"id":100001947,"dream":false}},
+              {"index":6,"itemData":{"id":100000169,"dream":false}},
+              {"index":7,"itemData":{"id":100002017,"dream":false}},
+              {"index":8,"itemData":{"id":100002765,"dream":false}},
+              {"index":9,"itemData":{"id":100000147,"dream":false}},
+              {"index":10,"itemData":{"id":100000311,"dream":false}},
+              {"index":11,"itemData":{"id":0,"dream":false}},
+              {"index":12,"itemData":{"id":0,"dream":false}},
+              {"index":13,"itemData":{"id":0,"dream":false}},
+              {"index":14,"itemData":{"id":0,"dream":false}},
+              {"index":15,"itemData":{"id":0,"dream":false}},
+              {"index":16,"itemData":{"id":0,"dream":false}},
+              {"index":17,"itemData":{"id":0,"dream":false}},
+              {"index":18,"itemData":{"id":0,"dream":false}},
+              {"index":19,"itemData":{"id":0,"dream":false}},
+              {"index":20,"itemData":{"id":0,"dream":false}},
+              {"index":21,"itemData":{"id":0,"dream":false}},
+              {"index":22,"itemData":{"id":0,"dream":false}}
+            ]}"#;
+        assert_eq!(
+            parse_wire_item_ids(retail).unwrap(),
+            [
+                100_004_227, 100_004_233, 100_001_317, 100_001_531, 100_000_966,
+                100_001_947, 100_000_169, 100_002_017, 100_002_765, 100_000_147,
+                100_000_311
+            ],
+            "exactly the 11 non-zero players in wire order; manager and empty slots ignored"
+        );
+    }
 }