Not his fault. If 2 players out of 11 are shite, then a stroke of genius can cover up the faults. But expecting genius tactics alone to cover up the limitations of 6 different players is madness. If that was even possible, teams would buy sunday league players, pay the coach 200 million and just the win the match on tactics alone. The players have to perform. It's not the tactics forcing Mendy to concede an awful pen. The game is played on the pitch, not on a whiteboard. Players get praised after great performances, they should take 95% of the blame after a loss too.