Andy Murray is undergoing sweat testing in a bid to discover why he has started cramping at the age of 35. And the Scot is ready to make immediate changes to his diet or preparation before the US Open starts on Monday.
The three-time Major champion has undergone two hip operations and suffered back, groin and abdominal injuries in the last year.
But the 2012 US Open winner has suffered from cramping during the US hardcourt events in Washington and Cincinnati.
And Murray admitted: “It is a bit frustrating right now because I am in a much better place physically in terms of my left groin and lower back but I’ve been having the cramping these last few weeks.
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“If there’s something I can potentially change whether it’s eating or drinking or illness or something then there’s that possibility, that can obviously change pretty quickly.”
Sweat tests evaluate how much sweat and sodium players lose – and can be used to help formulate energy drinks.
Andy Murray is wearing The Drive Collection from his signature AMC range during this year’s US Open, created to deliver a new standard in tennis performance clothing. View the kit at www.castore.com/collections/amc