Federer advances in Halle after final set tie-break

Seven-time champion Roger Federer survived a nervous first round challenge on Monday before prevailing at the ATP Halle Open 7-6 (8/6), 3-6, 7-6 (7/5) over home hope Philipp Kohlschreiber. The 33-year-old 17-time Grand Slam winner was pushed all the way by the 2011 Halle champion before clinching a second round matchup against either Ernests Gulbis or Sergiy Stakhovsky after just over two hours on centre-court. There was more luck for German players elsewhere in the draw, as Florian Mayer, Alexa