melbourne andy murray think play best tennis tournament australian open quarter-final victory david ferrer wednesday tough days distract father-in-law illness 28-year-old scot come three-hour 20-minute tussle spanish eighth seed 6-3 6-7 6-2 6-3 take place semi-finals sixth time seven years win contribute best week britain grand slam nearly 40 years johanna konta last four women draw murray brother jamie last four men double brazil bruno soar think today probably best match play especially second third set start hit ball good back court obviously last days tough maybe play best tennis manage get through murray endure worrisome days nigel sear father wife kim coach ana ivanovic collapse stand rod laver arena take hospital saturday sear discharge sunday examine cardiologist give all-clear join pregnant daughter back home britain leave murray free focus tennis former wimbledon champion four time lose finalist melbourne park reach semi-finals good four last five grand slam obviously want win events still play tough year 2014 think sort establish top game give chance keep work hard give best next days murray play milos raonic beat gael monfils last quarter-final bid reach fifth australian open final reflect strong british show murray say pretty good us people compete almost competitions good australian open far hopefully keep go ferrer victory best match say murray