The Champions League quarter-finals: The numbers you need to know

The Champions League quarter-finals begin on Tuesday, with eight of Europe’s biggest sides fighting to keep their routes to Budapest alive.The opening night brings Europe’s most-played fixture, and an Arsenal defence that has starved every opponent it has faced this season. Then, on Wednesday, Barcelona and Atletico Madrid meet for the fourth of five times in just two months. Paris Saint-Germain and Liverpool, meanwhile, renew their rivalry in a rematch shaped by last season’s round of 16.These are the numbers driving each tie.Advertisement