When a team plays in a match, they face multiple challenges. If they accept and overcome these challenges, they will win. If they do not overcome these challenges, they will lose.
The need to play well according to a pre-determined plan, the ability to react to the changing circumstances of the game, the necessity of overcoming the opposition's strengths, the requirement of dealing with all the distractions - the crowd, health, travel fatigue, weather, domestic difficulties, field conditions, etc, the obligation to accept that the referee will make some decisions which will make you wonder whether its was "right or wrong", are challenges that a team could face.
The best teams accept responsibility for the challenges that arise from the occasion. They overcome the weather, the crowd, the pressures, the difficult decisions that the referee will make, and the opposition. They don't complain, and then they usually win.
If they lose, they recognize that the responsibility for the loss lies within them. They alone have failed to overcome the challenges that the match had presented. Best teams and coaches do not look for a scapegoat.
Rugby's ultimate prize