Bayer Leverkusen coach Xabi Alonso said keeping a cool head would be the secret to making his side's recent dominance of Bayern Munich count in the Champions League last 16. Managing in the top flight for just a second full season, Alonso may be inexperienced in coaching terms, but the Spaniard knows a thing or two about Champions League success from his playing days. Alonso won the Champions League with both Liverpool and Real Madrid. During a career in which he also spent three seasons at Bayern, he reached the final three times and the semi-finals on a further six occasions.