Former US Open champion Andy Murray admits cramping issues are 'concerning' after sweat tests come back clear

Andy Murray remains unsure of the cause of his persistent cramping issues after undergoing sweat tests. Murray confirmed that the tests ruled out illness, but did not provide a solution. He said: «The sweat test was good, blood test was good.

No illnesses. I know now it is down to conditioning, hydration or food related. That is something I can obviously control a little bit as well.» Ad The former world No.

1 has been struggling with hot and humid conditions during the North American hard court swing. US OpenUS Open order of play, Day 1 — When are Serena and Murray playing?YESTERDAY AT 22:13 He admitted confusion as to why he has been facing this issue, saying: «I feel like I am in decent shape so that it is why it is concerning. I don't really know why it has happened.

Last few days in practice I have actually felt a bit better in the conditions and everything so hopefully I will be alright on Monday.» In his recent Cincinnati Masters third round defeat to fellow Brit Cameron Norrie, Murray started well — winning the first set — before beginning to struggle physically. After the match, Murray said: «It's a big concern for me, it's something I need to address and find a solution for. No-one knows exactly why cramps happen.