public void AddPlayerToMatchDay(MatchDay matchDay, int playerId)
 {
     matchDay.PlayerStats.Add(new PlayerRecord()
     {
         Player = Players.Find(playerId)
     });
 }
 public void CreateMatchDay(MatchDay matchDay)
 {
     MatchDays.Add(matchDay);
     SaveChanges();
 }
 public void RemoveMatchDay(MatchDay matchDay)
 {
     MatchDays.Remove(matchDay);
 }