Postpublished at 15:28 British Summer Time 3 June 2016
Pat Cash
Former Wimbledon champion on BBC Radio 5 live
"Getting the first set in the semi-final is crucial. Wawrinka isn't doing enough on his serve. At 0-40 he looked really demoralised so he's got a lot of work to do. This is where Andy has to focus and serve as well as he has been doing."