Buenos Aires: The River Plate faithful packed into the Monumental stadium in Buenos Aires on Sunday as Daniel Passarella's title favourites began their assault on a new Clausura season. With six new players coming in and 10 leaving, it was all change for 'The Millionaires' as they took on Lanus. However, River Plate slipped quickly into their stride and could have gone ahead early in the first half but for a flag for offside from the assistant referee. Pablo Ferrari's cross was eventually bundled into the net by Ernesto Farias, but he was actually played onside by a Lanus defender. Lanus offered little in attack but before the break, Rodolfo Graieb's long-throw found Cristian Fabbiani and his snapshot on the turn could easily have embarrassed Juan Carrizo in the River goal. Goalless it remained into the second half and River became increasingly frustrated at their failure to break the deadlock - Garcia Falcao's header on the hour finding the safe hands of Carlos Bossio. A disappointed crowd were settling for a draw when two minutes into time added-on, a Fernando Belluschi corner evaded everyone except River right-back Eduardo Tuzzio. His right-foot volley rocketed into the net and River had opened their account with three points. 2006 Clausura champions Boca Juniors had already hit the top of the table with a 4-0 thrashing of Banfield on Saturday, so the relief all around the Monumental was palpable. Estudiantes, the surprise winners of the Apertura championship in December, kick-off their season against Quilmes on Monday night in La Plata.