TerneryShit.cs

            var notes = new
            {
                Value = new
                {
                    Opponents = new List<string>() { "Oppnent 1", "Opponent 2" }
                }
            };

            Console.WriteLine(notes.Value.Opponents.Count != 0
                ? $"-opponents: {string.Join(", ", notes.Value.Opponents)}"
                : "-opponents: (empty)");