Sunderland (United Kingdom) (AFP) - Manuel Pellegrini saw Manchester City's troubles on the road continue as they slid to a surprise 1-0 defeat at struggling Sunderland on Sunday, their fourth reverse in six Premier League away games this season. A first-half winner from former Manchester United defender Phil Bardsley underlined the stark contrast in fortunes enjoyed by City this term. In-form forward Sergio Aguero drew a first blank in seven games, but the Argentinian was not alone among those in blue to experience a day to forget, as Sunderland deservedly earned a victory to pull within three points of safety. City have now lost by the only goal on their last four visits to Wearside, with Sunderland's winner on Sunday coming in the 21st minute.