Reuters - Thu, May 16, 2013 7:28 PM PHTBy Theo Ruizenaar AMSTERDAM (Reuters) - Chelsea landed their only silverware of a gruelling campaign by beating Benfica 2-1 in the Europa League final on Wednesday but assistant coach Boudewijn Zenden believes the triumph only partially atoned for a string of failures. The European champions started their season in August dreaming of a possible seven-trophy haul with the Community Shield, European Super Cup, World Club Cup, Champions League, Premier League, FA Cup and League Cup all up for grabs. ... More »Cup win helps save season of frustrating losses - Zenden