diff --git a/install/default_config.yaml b/install/default_config.yaml
index 5c4f85b..5469c23 100644
--- a/install/default_config.yaml
+++ b/install/default_config.yaml
@@ -39,10 +39,12 @@ min_suits: 4
 max_suits: 6
 
 # Corresponds to game IDs from hanab.live
+# Only games matching these criteria will be considered
 starting_game_id: 1000000
 ending_game_id: 9999999
 
 # EST = Eastern Standard Time, so USA/Eastern
+# Only games started within this time period will be considered.
 starting_time: "2023-10-10 00:00:00 EST"
 ending_time: "2023-12-10 00:00:00 EST"
 
diff --git a/src/config.py b/src/config.py
index 98facd6..34e4b94 100644
--- a/src/config.py
+++ b/src/config.py
@@ -128,7 +128,7 @@ class Config:
     @check_config_attr
     def starting_time(self) -> datetime.datetime:
         time = self._config["starting_time"]
-        return dateutil.parser(time, tzinfos={'EST': 'US/Eastern'})
+        return dateutil.parser.parse(time, tzinfos={'EST': 'US/Eastern'})
 
     @property
     @check_config_attr
diff --git a/src/fetch_games.py b/src/fetch_games.py
index 5323ef0..ecd9ac2 100644
--- a/src/fetch_games.py
+++ b/src/fetch_games.py
@@ -66,6 +66,7 @@ def process_game_entry(game_json: Dict, username_dict: Dict, variant_ids: List[i
     seed = game_json["seed"]
     score = game_json["score"]
     num_turns = game_json["numTurns"]
+    start_time = game_json["datetimeStarted"]
 
     game_options = game_json["options"]
     var_id = game_options["variantID"]
@@ -74,10 +75,12 @@ def process_game_entry(game_json: Dict, username_dict: Dict, variant_ids: List[i
 
     # Now, check if the game is one that we accept for league
 
-    if not utils.are_game_options_allowed(game_id, game_options):
-        return
-
-    if not utils.is_player_count_allowed(game_id, num_players):
+    if not all([
+            utils.are_game_options_allowed(game_id, game_options),
+            utils.is_player_count_allowed(game_id, num_players),
+            utils.is_game_id_allowed(game_id),
+            utils.is_time_allowed(game_id, start_time)
+        ]):
         return
 
     if var_id not in variant_ids:
@@ -217,6 +220,9 @@ def detailed_fetch_game(game_id: int) -> bool:
     if not utils.is_player_count_allowed(game_id, num_players):
         return False
 
+    if not utils.is_game_id_allowed(game_id):
+        return False
+
     var_id = database.get_variant_id(var_name)
     if var_id is None:
         logger.debug("Rejected game {} due to invalid variant id {}".format(game_id, var_id))
diff --git a/src/utils.py b/src/utils.py
index 124f7fc..825407e 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -4,6 +4,8 @@ import unidecode
 
 import constants
 from config import config_manager
+import dateutil.parser
+import datetime
 
 from log_setup import logger
 
@@ -19,7 +21,7 @@ def are_game_options_allowed(game_id: int, game_options: Dict) -> bool:
     """
     for forbidden_option in constants.FORBIDDEN_GAME_OPTIONS:
         if game_options.get(forbidden_option, False):
-            logger.debug("Rejected game {} due to option {} set".format(game_id, forbidden_option))
+            logger.debug("Rejected game {} due to option {} set.".format(game_id, forbidden_option))
             return False
     # All options ok
     return True
@@ -31,7 +33,36 @@ def is_player_count_allowed(game_id: int, num_players: int) -> bool:
     """
     config = config_manager.get_config()
     if not (config.min_player_count <= num_players <= config.max_player_count):
-        logger.debug("Rejected game {} due to invalid number of players ({})".format(game_id, num_players))
+        logger.debug("Rejected game {} due to invalid number of players ({}): Must be in range [{},{}]".format(
+            game_id, num_players, config.min_player_count, config.max_player_count
+        ))
+        return False
+    return True
+
+
+def is_game_id_allowed(game_id: int) -> bool:
+    """
+    Check if the game is is allowed for league.
+    """
+    config = config_manager.get_config()
+    if not (config.starting_game_id <= game_id <= config.ending_game_id):
+        logger.debug("Rejected game {} due to invalid game id: Must be in range [{},{}]".format(
+            game_id, config.starting_game_id, config.ending_game_id
+        ))
+        return False
+    return True
+
+
+def is_time_allowed(game_id: int, start_time: str) -> bool:
+    """
+    Check if game was played during the league period and is thus allowed
+    """
+    time = dateutil.parser.parse(start_time)
+    config = config_manager.get_config()
+    if not config.starting_time <= time <= config.ending_time:
+        logger.debug("Rejected game {} due to invalid start time ({}): Must be in range [{},{}]".format(
+            game_id, time, config.starting_time, config.ending_time
+        ))
         return False
     return True