The semi-finals kicked off on Tuesday with an electric first leg between two European giants. It was UEFA Champions League football at a relentless pace as Paris and Bayern poured in nine goals from seven different players. The breathless tie featured non-stop action with the hosts capturing victory at the Parc des Princes and taking a 5-4 lead into the second leg. Natalie Sawyer, Kevin Hatchard and John Bradley break down the historic match and look ahead to Wednesday's semi-final clash at the Estadio Metropolitano where Atleti and Arsenal will compete to gain the advantage before a return trip to London.