diff --git a/src/FourthDown.Api/FourthDown.Api.csproj b/src/FourthDown.Api/FourthDown.Api.csproj
index 2589983..7f6a16a 100644
--- a/src/FourthDown.Api/FourthDown.Api.csproj
+++ b/src/FourthDown.Api/FourthDown.Api.csproj
@@ -9,6 +9,7 @@
 
     <ItemGroup>
       <PackageReference Include="Jaeger" Version="1.0.3" />
+      <PackageReference Include="JetBrains.Annotations" Version="2023.3.0" />
       <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.20.0" />
       <PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning" Version="5.0.0" />
       <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
diff --git a/src/FourthDown.Shared/FourthDown.Shared.csproj b/src/FourthDown.Shared/FourthDown.Shared.csproj
index c2ab040..21908a5 100644
--- a/src/FourthDown.Shared/FourthDown.Shared.csproj
+++ b/src/FourthDown.Shared/FourthDown.Shared.csproj
@@ -5,6 +5,7 @@
     </PropertyGroup>
 
     <ItemGroup>
+      <PackageReference Include="JetBrains.Annotations" Version="2023.3.0" />
       <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.1" />
       <PackageReference Include="NodaTime" Version="3.0.10" />
       <PackageReference Include="OpenTracing" Version="0.12.1" />
diff --git a/src/FourthDown.Shared/Models/GameDetail.cs b/src/FourthDown.Shared/Models/GameDetail.cs
index 17f5233..e3f666c 100644
--- a/src/FourthDown.Shared/Models/GameDetail.cs
+++ b/src/FourthDown.Shared/Models/GameDetail.cs
@@ -1,5 +1,7 @@
+#nullable enable
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
+using JetBrains.Annotations;
 
 namespace FourthDown.Shared.Models
 {
@@ -8,59 +10,71 @@ internal class GameRaw
         public DataObject Data { get; set; }
     }
 
+    [UsedImplicitly]
     internal class DataObject
     {
         public Viewer Viewer { get; set; }
     }
 
+    [UsedImplicitly]
     internal class Viewer
     {
         public GameDetail GameDetail { get; set; }
     }
 
+    [UsedImplicitly]
     public class HomePointsOvertime
     {
     }
 
+    [UsedImplicitly]
     public class GameTeam
     {
         public IReadOnlyList<string> Abbreviation { get; set; }
         public IReadOnlyList<string> NickName { get; set; }
     }
 
+    [UsedImplicitly]
     public class Period
     {
     }
 
+    [UsedImplicitly]
     public class ScoringSummary
     {
         public int PlayId { get; set; }
-        public string PlayDescription { get; set; }
+        public string? PlayDescription { get; set; }
         public int PatPlayId { get; set; }
         public int HomeScore { get; set; }
         public int VisitorScore { get; set; }
     }
 
+    [UsedImplicitly]
     public class VisitorPointsOvertime
     {
     }
 
+    [UsedImplicitly]
     public class CurrentFahrenheit
     {
     }
 
+    [UsedImplicitly]
     public class Location
     {
     }
 
+    [UsedImplicitly]
     public class LongDescription
     {
     }
 
+    [UsedImplicitly]
     public class CurrentRealFeelFahrenheit
     {
     }
 
+    [UsedImplicitly]
     public class Weather
     {
         public CurrentFahrenheit CurrentFahrenheit { get; set; }
@@ -70,6 +84,7 @@ public class Weather
         public CurrentRealFeelFahrenheit CurrentRealFeelFahrenheit { get; set; }
     }
 
+    [UsedImplicitly]
     public class YardLine
     {
     }
@@ -77,14 +92,14 @@ public class YardLine
     public class Drive
     {
         public int QuarterStart { get; set; }
-        public string EndTransition { get; set; }
-        public string EndYardLine { get; set; }
+        public string? EndTransition { get; set; }
+        public string? EndYardLine { get; set; }
         public bool EndedWithScore { get; set; }
         public int FirstDowns { get; set; }
-        public string GameClockEnd { get; set; }
-        public string GameClockStart { get; set; }
-        public string HowEndedDescription { get; set; }
-        public string HowStartedDescription { get; set; }
+        public string? GameClockEnd { get; set; }
+        public string? GameClockStart { get; set; }
+        public string? HowEndedDescription { get; set; }
+        public string? HowStartedDescription { get; set; }
         public bool Inside20 { get; set; }
         public double OrderSequence { get; set; }
         public int PlayCount { get; set; }
@@ -93,67 +108,69 @@ public class Drive
         public int PlaySeqEnded { get; set; }
         public int PlaySeqStarted { get; set; }
         public int QuarterEnd { get; set; }
-        public string StartTransition { get; set; }
-        public string StartYardLine { get; set; }
-        public string TimeOfPossession { get; set; }
+        public string? StartTransition { get; set; }
+        public string? StartYardLine { get; set; }
+        public string? TimeOfPossession { get; set; }
         public int Yards { get; set; }
         public int YardsPenalized { get; set; }
-        public string PossessionTeamAbbreviation { get; set; }
-        public string PossessionTeamNickName { get; set; }
-        public string PossessionTeamFranchiseCurrentLogoUrl { get; set; }
+        public string? PossessionTeamAbbreviation { get; set; }
+        public string? PossessionTeamNickName { get; set; }
+        public string? PossessionTeamFranchiseCurrentLogoUrl { get; set; }
     }
 
+    [UsedImplicitly]
     public class PlayStat
     {
         public int StatId { get; set; }
         public int Yards { get; set; }
-        public string PlayerName { get; set; }
-        public string TeamId { get; set; }
-        public string TeamAbbreviation { get; set; }
-        public string GsisPlayerId { get; set; }
+        public string? PlayerName { get; set; }
+        public string? TeamId { get; set; }
+        public string? TeamAbbreviation { get; set; }
+        public string? GsisPlayerId { get; set; }
     }
 
+    [UsedImplicitly]
     public class Play
     {
-        public string ClockTime { get; set; }
+        public string? ClockTime { get; set; }
         public int Down { get; set; }
-        public string EndClockTime { get; set; }
-        public string EndYardLine { get; set; }
+        public string? EndClockTime { get; set; }
+        public string? EndYardLine { get; set; }
         public bool FirstDown { get; set; }
         public bool GoalToGo { get; set; }
         public bool NextPlayIsGoalToGo { get; set; }
-        public string NextPlayType { get; set; }
+        public string? NextPlayType { get; set; }
         public double OrderSequence { get; set; }
         public bool PenaltyOnPlay { get; set; }
-        public int PlayClock { get; set; }
+        [JsonIgnore] public int PlayClock { get; set; }
         public bool PlayDeleted { get; set; }
-        public string PlayDescription { get; set; }
-        public string PlayDescriptionWithJerseyNumbers { get; set; }
+        public string? PlayDescription { get; set; }
+        public string? PlayDescriptionWithJerseyNumbers { get; set; }
         public int PlayId { get; set; }
-        public string PlayType { get; set; }
+        public string? PlayType { get; set; }
         public IList<PlayStat> PlayStats { get; set; }
-        public string PrePlayByPlay { get; set; }
+        public string? PrePlayByPlay { get; set; }
         public int Quarter { get; set; }
         public bool ScoringPlay { get; set; }
-        public string ShortDescription { get; set; }
+        public string? ShortDescription { get; set; }
         public bool SpecialTeamsPlay { get; set; }
-        public string TimeOfDay { get; set; }
-        public string YardLine { get; set; }
+        public string? TimeOfDay { get; set; }
+        public string? YardLine { get; set; }
         public int Yards { get; set; }
         public int YardsToGo { get; set; }
         public int? DriveNetYards { get; set; }
         public int? DrivePlayCount { get; set; }
         public int? DriveSequenceNumber { get; set; }
-        public string DriveTimeOfPossession { get; set; }
-        public string PossessionTeamAbbreviation { get; set; }
-        public string PossessionTeamNickName { get; set; }
-        public string PossessionTeamFranchiseCurrentLogoUrl { get; set; }
+        public string? DriveTimeOfPossession { get; set; }
+        public string? PossessionTeamAbbreviation { get; set; }
+        public string? PossessionTeamNickName { get; set; }
+        public string? PossessionTeamFranchiseCurrentLogoUrl { get; set; }
         public bool? IsBigPlay { get; set; }
-        public string ScoringPlayType { get; set; }
-        public string ScoringTeamId { get; set; }
-        public string ScoringTeamAbbreviation { get; set; }
-        public string ScoringTeamNickName { get; set; }
-        public string StPlayType { get; set; }
+        public string? ScoringPlayType { get; set; }
+        public string? ScoringTeamId { get; set; }
+        public string? ScoringTeamAbbreviation { get; set; }
+        public string? ScoringTeamNickName { get; set; }
+        public string? StPlayType { get; set; }
     }
 
     public class GameDetail
diff --git a/src/FourthDown.Shared/Repositories/Json/JsonGamePlayRepository.cs b/src/FourthDown.Shared/Repositories/Json/JsonGamePlayRepository.cs
index adc4346..4707541 100644
--- a/src/FourthDown.Shared/Repositories/Json/JsonGamePlayRepository.cs
+++ b/src/FourthDown.Shared/Repositories/Json/JsonGamePlayRepository.cs
@@ -31,23 +31,22 @@ public async Task<GameDetail> GetGamePlaysAsync(Game game, CancellationToken can
         {
             using var scope = _tracer.BuildTrace(nameof(GetGamePlaysAsync));
 
-            scope.LogStart(nameof(GetGamePlaysAsync));
-
-            var url = GetGameUrl(game.GameId, game.Season);
-
-            scope.LogEnd(nameof(GetGamePlaysAsync));
-
             if (_gamesCache.TryGetValue(game, out var gameDetail))
             {
                 _logger.LogInformation($"Game found in cache: {game.GameId}");
                 return gameDetail;
             }
 
+            scope.LogStart(nameof(GetGamePlaysAsync));
+
+            var url = GetGameUrl(game.GameId, game.Season);
             gameDetail = await GetGameJson(url, cancellationToken, scope);
             gameDetail.Game = game;
 
             _gamesCache[game] = gameDetail;
 
+            scope.LogEnd(nameof(GetGamePlaysAsync));
+
             return gameDetail;
         }