 The 2015 Vienna champions had not dropped a set en route to their sixth ATP Tour doubles final of the season and had won 16 of their past 19 matches.At the Nitto ATP Finals Lukasz Kubot and Marcelo Melo made a winning start to Group Jonas Bjorkman after beating Ivan Dodig and Filip Polasek.Kubot and Melo hit seven aces, won 76 percent of their first serve points in an hour and 40 minutes of play.