diff --git a/src/models/data/base_player_create.rs b/src/models/data/base_player_create.rs
index f661535..4ca906a 100644
--- a/src/models/data/base_player_create.rs
+++ b/src/models/data/base_player_create.rs
@@ -4,8 +4,8 @@ use serde::{Deserialize, Serialize};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct BasePlayerCreate {
-    #[serde(rename(deserialize = "playersBattleCategoriesIds"))]
-    pub players_battle_categories_ids: HashMap<u32, (u8, u32)>,
+    #[serde(default, rename(deserialize = "playersBattleCategoriesIds"))]
+    pub players_battle_categories_ids: Option<HashMap<u32, (u8, u32)>>,
 
     #[serde(rename(deserialize = "battleLevel"))]
     pub battle_level: u8,
@@ -22,17 +22,17 @@ pub struct BasePlayerCreate {
     #[serde(rename(deserialize = "camouflageSlot"))]
     pub camouflage_slot: u8,
 
-    #[serde(rename(deserialize = "avgMmr"))]
-    pub average_mmr: Vec<Option<f64>>,
+    #[serde(default, rename(deserialize = "avgMmr"))]
+    pub average_mmr: Option<Vec<Option<f64>>>,
 
-    #[serde(rename(deserialize = "playerWaitTimes"))]
-    pub player_wait_times: HashMap<u32, f64>,
+    #[serde(default, rename(deserialize = "playerWaitTimes"))]
+    pub player_wait_times: Option<HashMap<u32, f64>>,
 
     #[serde(rename(deserialize = "accountDatabaseIds"))]
     pub account_database_ids: Vec<u32>,
 
-    #[serde(rename(deserialize = "turboBattlesStats"))]
-    pub turbo_battles_statistics: TurboBattlesStatistics,
+    #[serde(default, rename(deserialize = "turboBattlesStats"))]
+    pub turbo_battles_statistics: Option<TurboBattlesStatistics>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
diff --git a/tests/data.rs b/tests/data.rs
index 77d8a68..8670237 100644
--- a/tests/data.rs
+++ b/tests/data.rs
@@ -19,13 +19,13 @@ fn parse_ok() -> Result<()> {
 }
 
 #[test]
-fn type0_ok() -> Result<()> {
+fn base_player_create_ok() -> Result<()> {
     let mut replay = Replay::open(File::open(
         "tests/replays/20230429_0126__helaas_pindakaas_A140_ASTRON_REX_105_16114615898101270.wotbreplay",
     )?)?;
     let data = replay.read_data()?;
 
-    let (author_nickname, arena_unique_id, arena_type_id, type_0) = data
+    let (author_nickname, arena_unique_id, arena_type_id, arguments) = data
         .packets
         .iter()
         .filter_map(|packet| {
@@ -46,14 +46,17 @@ fn type0_ok() -> Result<()> {
     assert_eq!(author_nickname, "helaas_pindakaas");
     assert_eq!(*arena_unique_id, 16114615898101270);
     assert_eq!(*arena_type_id, 43);
-    assert_eq!(type_0.battle_level, 9);
-    assert_eq!(type_0.battle_category_id, 13);
-    assert!(type_0.is_mouse_enabled);
-    assert_eq!(type_0.matchmaker_type, 2);
-    assert_eq!(type_0.camouflage_slot, 1);
-    assert_eq!(type_0.average_mmr, [Some(59.29457753400008), Some(99.34182121604681)]);
+    assert_eq!(arguments.battle_level, 9);
+    assert_eq!(arguments.battle_category_id, 13);
+    assert!(arguments.is_mouse_enabled);
+    assert_eq!(arguments.matchmaker_type, 2);
+    assert_eq!(arguments.camouflage_slot, 1);
     assert_eq!(
-        type_0.account_database_ids,
+        arguments.average_mmr,
+        Some(vec![Some(59.29457753400008), Some(99.34182121604681)])
+    );
+    assert_eq!(
+        arguments.account_database_ids,
         [
             517033644, 537867068, 597583401, 601893865, 576810156, 531053956, 599580824, 558025185,
             526927603, 594778041, 505587490, 597422303, 531923111, 587617355
@@ -64,7 +67,7 @@ fn type0_ok() -> Result<()> {
 }
 
 #[test]
-fn subtype_2f_players_ok() -> Result<()> {
+fn update_arena_ok() -> Result<()> {
     let mut replay = Replay::open(File::open(
         "tests/replays/20230429_0126__helaas_pindakaas_A140_ASTRON_REX_105_16114615898101270.wotbreplay",
     )?)?;
@@ -74,8 +77,8 @@ fn subtype_2f_players_ok() -> Result<()> {
         .packets
         .iter()
         .filter_map(|packet| match &packet.payload {
-            Payload::EntityMethod(EntityMethod::UpdateArena { arguments: sub_type_2f, .. }) => {
-                sub_type_2f.players.as_ref()
+            Payload::EntityMethod(EntityMethod::UpdateArena { arguments, .. }) => {
+                arguments.players.as_ref()
             }
             _ => None,
         })
@@ -91,3 +94,10 @@ fn subtype_2f_players_ok() -> Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn training_room_ok() -> Result<()> {
+    let mut replay = Replay::open(File::open("tests/replays/training_room.wotbreplay")?)?;
+    replay.read_data()?;
+    Ok(())
+}
diff --git a/tests/replays/training_room.wotbreplay b/tests/replays/training_room.wotbreplay
new file mode 100644
index 0000000..8862713
Binary files /dev/null and b/tests/replays/training_room.wotbreplay differ