BusinessLogic.DataAccess.Repositories.ChampionRepository.GetChampionData C# (CSharp) Method

        public ChampionData GetChampionData(int gameDefinitionId)
        {
            DbRawSqlQuery<ChampionStatistics> championStatisticsData = dataContext.MakeRawSqlQuery<ChampionStatistics>(CHAMPION_SQL,
                new SqlParameter("GameDefinitionId", gameDefinitionId));

            List<ChampionStatistics> championStatistics = championStatisticsData.ToList();

            if (ThereIsATieForChampion(championStatistics))
            {
                return new NullChampionData();
            }

            ChampionData championData = (from x in championStatistics
                                        select new ChampionData
                                        {
                                            PlayerId = x.PlayerId,
                                            NumberOfGames = x.NumberOfGames,
                                            NumberOfWins = x.NumberOfWins,
                                            WinPercentage = 100 * x.NumberOfWins / x.NumberOfGames,
                                            GameDefinitionId = gameDefinitionId
                                        }).FirstOrDefault();

            if (championData == null || championData.NumberOfWins == 0)
            {
                return new NullChampionData();
            }

            return championData;
        }