James Duckworth
James Duckworth had never experienced anything like it on a tennis court.
And as his Australian Open opponent Blaz Kavcic collapsed in the change rooms with a full body cramp and had to be treated with morphine, it's fair to assume he was in unchartered territory too.
But after four hours and 52 minutes - the longest match to date at the Australian Open - and in temperatures pushing 40 degrees, it was the Slovenian who was on the right side of the 3-6, 6-3, 6-4, 6-7, (3-7), 10-8 scoreline.
And Duckworth who was lamenting a great opportunity lost.
The 20-year-old wildcard twice came back from a break down in the deciding set.
He also saved five match points before finally being overwhelmed, suffering such severe cramps in both legs that his only aim was to end points as quickly as possible.
"From about 3-2 in the fifth, my hamstring and quads were locking up," Duckworth said.
"It started off just on serve and then when I was moving around the baseline.
"Any kind of sharp movement or quick movement and I'd lock up."
Then there was the heat.
"The court actually felt really hot underfoot," he said.
"My feet were burning every time I pushed off to sprint. I was sweating bucketloads.
"It was tough conditions."
Even so, the main emotion for Duckworth in the aftermath was disappointment, as victory would have meant a glamorous third-round clash with No.7 seed Jo-Wilfried Tsonga.