public async Task <IActionResult> MakePrediction(Prediction model)
        {
            if (this.ModelState.IsValid)
            {
                model.AdquiredPoints = 0;
                model.Id             = 0;
                await _matchRepository.AddPrediction(model);

                return(this.RedirectToAction(nameof(Index))); //new { id = gMember.GroupId }
            }

            return(this.View(model));
        }