UCL: Man City beats Real Madrid, Alonso under fire; Arsenal perfect, PSG draws

• Manchester City defeated Real Madrid 2-1 in the Champions League, intensifying pressure on Madrid coach Xabi Alonso.
• Arsenal maintained their perfect record in the competition with a 3-0 victory over Club Brugge.
• Defending champion Paris Saint-Germain was held to a 0-0 draw by Athletic Bilbao.
• Real Madrid has won only two of their last eight games, facing back-to-back home losses and jeers from fans.
• Other UCL results included Ajax's 4-2 comeback win against Qarabag and Copenhagen's late 3-2 victory over Villarreal.

Why It Matters: Real Madrid's defeat raises serious questions about coach Xabi Alonso's future.