In the end, Xabi Alonso had just one word for Real Madrid's 5-2 loss to Atletico Madrid on Saturday: "bad". Well, duh!Los Blancos had enjoyed an undefeated start to the season and, heading into the first Madrid derby of the year, seemed well-equipped to make something happen - perhaps even continue that run. Atleti were an unpredictable shambles of a side, a summer spending spree leading to mid-table irrelevance (albeit in a small sample size). Madrid were in fine form. Kylian Mbappe was scoring for fun. Arda Guler looked a wonderful fit under Alonso. All of the pieces were in place here. That prediction aged like milk. Madrid were woeful against their crosstown rivals, a self-inflicted mess of disastrous defending and lack of effort in central areas, leading to a comprehensive 5-2 defeat. And in truth, it really could have been more. It all leaves Madrid searching for answers a bit. They have leaned heavily on Mbappe thus far, but also looked really rather good as a unit. However, as soon as they faced a team that likes to disrupt, they crumbled. And that's the bigger worry. Madrid derbies are testy things, full of hard tackles and fierce individual duels. And under real pressure for the first time this season, Los Blancos collapsed, meaning Alonso has had his rude awakening at Real. Now the new boss has to figure out how to react, maybe even rebuild, and prepare for more stern challenges that lie ahead. This job is never easy. But Alonso now knows just how hard it can be.