The hosts are 2-0 down after losing ground at the Camp Nou and will have to do without the services centre-back Inigo Martinez, who was red carded on the night.
But with Carlos Vela and Antoine Griezmann fit, anything is possible. Can the Basque club overturn the deficit and reach the final?
Here, we'll provide live player ratings—updated at half-time and full time!—for la Blaugrana's XI.
|Player||Position||H/T Rating||F/T Rating|
|Cesc Fabregas||LW (ish)||6||6|
|Alex Song (on 66')||CM||N/A||7|
|Alexis Sanchez (on 77')||RW||N/A||7|
Jose Pinto: Calm in possession to dispel la Real's high-press strategy, made several key saves.
Dani Alves: Excellent going forward but no end product in sight. Very suspect defensively, sold Gerard Pique down the river with a bad pass in the second half.
Gerard Pique: A little cumbersome, perhaps, in space; very little to do overall. Came to the rescue a few times.
Javier Mascherano: Crunched Griezmann with a questionable challenge, got sucked out easily in first half. Much improved during second period.
Jordi Alba: Pacey and purposeful going forward, but oft-ignored and lacking end product.
Sergio Busquets: A rather typical Busquets performance.
Cesc Fabregas: Has drifted around looking to impact the pact. Tucked in off the left well for Alba, but ultimately did very little. One exquisite chipped through-ball of note.
Xavi: Very assured in possession, picking out Alves' runs superbly. Very reliable and a contender for Man of the Match.
Andres Iniesta: Like Cesc, has jogged around looking for space in a congested final third. Didn't have a huge impact, but didn't need to.
Pedro: A bit of an after-thought given Alves' frequent runs forward. Produced one good shot on goal that was hacked away by La Real.
Lionel Messi: Scored the opener in sublime style, very good in possession. Getting better and better at switching the ball rapidly from side to side as a conduit.
(Sub) Alex Song: Adapted to the speed of play seamlessly and did well on the ball.