Keylor Navas is clearly Real Madrid's No. 1 but he needs to start hitting the form of last season. It may seem like an exercise in stating the obvious but Keylor Navas could prove to be the most important Real Madrid player on the pitch in Saturday's derby against Atletico. The Real keeper hasn't been at his best so far this season, having made his comeback from surgery to correct an ankle problem, and he has struggled to replicate the form that during the last campaign provided the team with such a resolute last line of defence. Navas missed the opening games of the season when Kiko Casilla...