Real Madrid wouldn't sacked Xabi Alonso even if they fail to secure victory against Alaves. Xabi Alonso is a great coach, under his guidance, Real Madrid performance has improve effectively. Real Madrid under Carlos Anecelotti underperformed badly which led to his sacked and Xabi Alonso was brought on board. Carlos Anecelotti isn't a better coach than Xabi Alonso, instead they're both experienced Coaches. However, Xabi Alonso team will defeat Alaves by a large margin.