Real Madrid beat Atletico Madrid in a Champions League penalty shootout — again — to keep its title defense alive Wednesday and advance to the quarterfinals.

Another consequential week of UEFA Champions League action will wrap up Wednesday as the round of 16 comes to a close and four more teams will book a spot in the quarterfinals. Arsenal look to follow Bayern Munich's Tuesday example and convert a major first-leg advantage into advancement into the last eight,

Real Madrid fans and players celebrated their hard-fought win against Atletico Madrid on Wednesday to earn a quarter-final berth in the Champions League, but manager Carlo Ancelotti was more relieved than rapturous at what he said was a subpar performance.