Barcelona came back from behind twice to salvage a 3-3 draw against Inter on Wednesday, completing the comeback in one of the most dramatic UEFA Champions League semifinal matches in recent memory. Inter snapped a three game goalless run after roughly 30 seconds of play courtesy of Marcus Thuram,

How does it work?Thirty-six sides entered into the new "league phase" and now just four remain with a month-and-a-half to go in the UCL campaign.Barcelona, Paris Saint-Germain, Arsenal, and Inter Milan are through to the semifinals,

Inter and Barcelona are all square while Paris Saint-Germain hold a slender advantage as they welcome Arsenal for the climax of the UEFA Champions League semi-finals.