MEXICO CITY, Jan 21 (Reuters) - Toluca shook off the cobwebs on the opening weekend of the Mexican Clausura championship to clinch a narrow 2-1 win against Atlas.Edgar Duenas headed Toluca in front and Sergio Ponce extended the lead with a powerful drive on 58 minutes. The Red Devils, who are managed by Argentina's 2006 World Cup coach Jose Pekerman, did not dominate the play and Jorge Achucarro's spectacular long-range goal was modest compensation for a hard-working Atlas team. Argentine coach Miguel Angel Brindisi was overseeing his first Mexican league game since taking charge of Atlas. Guadalajara also enjoyed a bright start in the Clausura, coasting to a 3-0 win over the Pumas UNAM. Mexicos most popular team were fired up after a pre-match ceremony to honour the club's record goalscorer, 71-year-old Salvador Reyes. Yet another Argentine coach, Moneterrey's Ricardo La Volpe, saw his team earn a point with a 1-1 draw at Necaxa. La Volpe was making his return to the local scene for the first time since 2006, when he ended a four-year stint as Mexican national coach. A goal by Juan Carlos Cacho was enough to give Pachuca a win over UAG Tecos.