* Britain start Rio same way they ended London * NZ, Britain swap Olympic records (Adds details, quotes) By Martyn Herman RIO DE JANEIRO, Aug 11 (Reuters) - Tasked with occupying the saddle vacated by British track cycling colossus Chris Hoy, Callum Skinner proved the perfect man for the job as he anchored his country's team sprint trio to Olympic gold on Thursday. With six-times Olympic medallist Hoy watching from a commentary position inside Rio's velodrome, Skinner nailed a superb final lap as Britain beat favourites and world champions New Zealand by the slenderest of margins -- 0.102 seconds. More...