By Gregory Blachier MONTE CARLO (Reuters) – A string of errors put world number two Andy Murray out of the Monte Carlo Masters on Thursday when he lost 6-1 6-2 to Swiss Stanislas Wawrinka in the third round. Fourth seed Tomas Berdych and Argentine Juan Martin Del Potro, seeded five, were also beaten at the first big claycourt event of the season, while Rafael Nadal calmly continued his bid for a ninth consecutive crown with a 6-2 6-4 victory over Philipp Kohlschreiber of Germany. …
