Karim Benzema led Real Madrid to a 1-0 win at Sevilla before Barcelona rolled over Almeria 5-0 in the semifinals of the Copa del Rey on Wednesday.
Benzema, the much-questioned France striker, answered his critics with a valuable away goal in the 17th minute of the first-leg match at Sanchez Pizjuan stadium. Benzema gathered the ball inside the Sevilla half, dribbled into the area and shook off two defenders before beating goalkeeper Andres Palop with a low right-footed strike.
Defending champion Sevilla nearly equalized just before halftime when Madrid defender Raul Albiol slowed Luis Fabiano's goalbound shot and eventually kept it out of goal. However, TV replays suggested the ball may have crossed the line.
The tense atmosphere boiled over toward the end when Madrid keeper Iker Casillas was hit in the head by what appeared to be a plastic bottle thrown from the stands.
"We have taken away a positive result, but Sevilla is a good team and the second leg will be wide open," Casillas said.
Madrid returns to the Santiago Bernabeu stadium for next week's return leg looking to secure a place in the final, where biggest rival Barcelona will likely await after another dominating performance.
Lionel Messi scored a double and David Villa and Pedro Rodriguez added goals in the opening 31 minutes. Substitute Seydou Keita completed the rout in the 89th to leave Almeria with little hope after suffering a second straight lopsided defeat to the Spanish champion.
Record 25-time champion Barcelona and 17-time winner Madrid are on course to meet in the April 20 final, which comes just three days after the pair meet in a crucial league match.
In Seville, days of goading provided a charged atmosphere as Sevilla pressed forward early but Benzema's class put the visitors in control.
The striker's second game-winning goal in two games came after a week when his teammates and coach Jose Mourinho demanded more from the Frenchman. Madrid brought Emmanuel Adebayor from Manchester City on loan on Tuesday to fill in for the injured Gonzalo Higuain, but Benzema showed he will be an asset to Madrid down the stretch after his individual effort.
Benzema raced over to the sidelines to celebrate his goal with coach Jose Mourinho, who is steering the Spanish giant toward its first cup final since 2004. Its last victory came in 1993.
Sevilla looked to equalize with long balls to forwards Frederic Kanoute and Luis Fabiano, who came close with a header at the half-hour mark.
Sevilla looked to have equalized when Kanoute put Luis Fabiano through the defense but the linesman ruled Albiol kept the Brazil striker's shot from completely crossing the goal line.
"Almost crossing the line is not the same as crossing the line," Casillas said.
A physical second half ensued as both teams looked to score, but Sevilla grew exacerbated as its attack failed to threaten Casillas' goal and Madrid owned the few chances there were. Mesut Oezil somehow failed to make it 2-0 after gathering Cristiano Ronaldo's miss inside the box with Palop out of position but Sevilla defender Alexis Ruano deflected the ball wide of the open net.
"We could have scored another goal, but the (result) is good," said Cristiano Ronaldo.
Substitute Alvaro Negredo missed a shot in the dying stages for Sevilla, which has not beaten Madrid in a two-legged domestic cup series since 1955. Madrid has won the four series since then, including the 1962 final.
Barcelona looked ready to repeat its 8-0 demolition of Almeria from earlier this season at the Camp Nou stadium.
Messi got the rout moving in the 10th minute with a trademark left-footed strike from the edge of the area that goalkeeper Esteban Andres got a hand to but could not keep out.
Villa doubled the lead a minute later after receiving a pass from Xavi Hernandez and picking his spot just inside the far post.
Messi capped a counterattack in the 16th with another left-footed strike for his 35th goal overall and eighth brace in all competitions this season.
Pedro headed in Xavi's free kick in the 31st for his 18th goal of the campaign before Keita capped the Catalan club's fifth 5-0 win of the season in the 88th.
Barcelona won its last domestic cup two years ago.
The return legs are played on Feb. 2.
