Three days after Barcelona ended Real Madrid's Copa del Rey title defense, the Spanish champions' own hopes of a fourth successive league title suffered a setback in a 0-0 draw at Villarreal on Saturday Barcelona's slip let Madrid move seven points clear of its fierce rival just past the season's midway point through its earlier 3-1 comeback win over last-place Zaragoza. Lionel Messi missed with a chip shot early, and Cesc Fabregas hit the crossbar late in Barcelona's best scoring chances. Zaragoza started well at Santiago Bernabeu Stadium with Angel Lafita scoring an 11th-minute opener. But Kaka leveled for Madrid in the 32nd, and Cristiano Ronaldo and Mesut Oezil added two more shortly after halftime to decide the game. (For more sports news and updates, follow Ahram Online sports on Twitter: @AO_Sports)