Barcelona have gone to a very surprising lineup for their UEFA Champions League semifinal, second leg clash against Chelsea, dropping Dani Alves to move into a 3-4-3 formation. Chelsea showed what they can do to a poorly organized back three in the second leg of their tie with Napoli, so Barcelona is either banking on Chelsea putting 10 men behind the ball for the entire game or Javier Mascherano putting in a flawless performance. The Blues' lineup is entirely as expected.

Barcelona starting lineup (3-4-3): Victor Valdes; Gerard Pique, Javier Mascherano, Carles Puyol; Sergio Busquets, Xavi, Andres Iniesta, Cesc Fabregas; Isaac Cuenca, Lionel Messi, Alexis Sanchez.

Substitutes from: Jose Pinto, Dani Alves, Adriano, Seydou Keita, Thiago Alcantara, Pedro, Cristian Tello

Chelsea starting lineup (4-5-1): Petr Cech; Ashley Cole, John Terry, Gary Cahill, Branislav Ivanovic; Ramires, Raul Meireles, John Obi Mikel, Frank Lampard, Juan Mata; Didier Drogba.

Substitutes from: Ross Turnbull, Jose Bosingwa, Michael Essien, Florent Malouda, Daniel Sturridge, Solomon Kalou, Fernando Torres

Kickoff is at 2:45 p.m. ET, 8:45 p.m. local time from Camp Nou. You can watch the game on FOX Soccer Channel in the USA, Sky Sports 2 in the UK and Sportsnet regional networks in Canada.

We'll have live coverage throughout the game in our Barcelona vs. Chelsea, 2012 UEFA Champions League StoryStream. For more on the two teams, head over to Chelsea FC blog We Ain't Got No History and FC Barcelona blog Barca Blaugranes.