Real Madrid's attack is stuck in neutral. Since the calendar turned to 2015, Los Blancos are scoring just 1.8 goals per game compared to 3.7 in the 15 matches before the season's winter break. More importantly, the team has lost five of its 15 games since the new year and heads into this weekend's Clasico trailing Barcelona by one point in the La Liga standings. At the forefront of these issues is Cristiano Ronaldo.