There's a traitor in the team who had been leaking news about the line up since Mourinho was manager. Opponents who knew about Man Utd line up hrs before the game could take counter measures. That was why it had been so difficult to win games.
Should let Martial kick take the penalty. How many times did Rashford missed?
Don't have a system in taking penalty. Should have let one keep taking penalty until he miss and then the next better player will take the penalty until it miss etc.