Andy Murray's former coach Miles Maclagan predicts "lull"Andy Murray's former coach Miles Maclagan believes that the British number one will experience a slump in results as opposed to a surge of victories after picking up the US Open trophy ..... "[Murray is] in uncharted territory and he could go one of two ways. Either he'll absolutely fly for a while and win everything in sight but it wouldn't surprise me to see a bit of a lull. "You reach a lifetime goal, something you've strived for your whole life, and you've now got it and you have to take a bit of time to think 'I've got to set some new goals, readjust myself and build up some determination for that.'"