Levante\'s slide since their surprising climb to the top of La Liga continued when they lost 3-2 at Atletico Madrid on Sunday for a third successive defeat.The day\'s action, which included a rare win for Athletic Bilbao in Sevilla, was marred by an ugly incident in the late kickoff between Granada and Real Mallorca when a referee\'s assistant was struck by an object thrown from the crowd.The match was halted in the 60th minute with Granada winning 2-1 before being called off around 20 minutes later and images in local media suggested the official had sustained a minor cut to his face.Earlier, second-half goals from Atletico\'s Portuguese forward Pizzi, Spain Under-21 international Adrian and Brazilian playmaker Diego secured victory over Levante at the Calderon, lifting the erratic Madrid club to ninth on 16 points from 12 matches.Valencia-based Levante, whose annual budget of around 20 million euros ($27 million) is less than a 20th of leaders Real Madrid, went on a spectacular seven-match winning run, including beating Real 1-0, that put them top last month for the first time in their 102-year history.They stay in fourth place on 23 points.\"Atletico is a dangerous team with a lot of talent, but we played a great match against them and I am happy for that, even though we felt we could have got a draw,\" Levante coach Juan Ignacio Martinez, in his first top-flight coaching job, told a news conference.\"In the second half we were a bit more ambitious but we did not make the most of our equaliser at 1-1,\" he added.The table took on a more familiar look on Saturday when leaders Real Madrid and second-placed Barcelona pulled further away at the top thanks to victories over Valencia and Real Zaragoza respectively.Real edged a thrilling and bad-tempered clash at the Mestalla 3-2 for their eighth win in a row, while champions Barca thumped Zaragoza 4-0 at the Nou Camp, La Liga top scorer Lionel Messi netting his 15th of the campaign.    Real, who host their great rivals in the opening \'Clasico\' of the season on Dec. 10, have 31 points from 12 matches, three ahead of Barca.Valencia, the last club apart from the big two to win the title, back in 2004, are third on 24.