For the first three rounds of the playoffs, LeBron James ran roughshod over the competition, barging through defences like child's play and picking up field goals like they were on sale at bargain prices.
So the Miami Heat were shocked when the two-time reigning NBA finals Most Valuable Player was immobilised by leg cramps and unable to even take a baby step forward late in the fourth quarter of Thursday's tightly contested game one of the finals.
"It felt like a punch in the gut when you see your leader limping like that back to the bench," said Heat coach Erik Spoelstra.
James was still feeling the effects of the leg cramps when he met with reporters on Friday, after doctors treated his dehydration and cramping with intravenous drips.
"I am pretty sore right now from the muscle spasms," said James, but he insisted he will be fine for Sunday's game two.
"I got two and a half bags of IV last night. So obviously I got no sleep."
The top-seeded San Antonio Spurs took a 1-0 lead in the best-of-seven series by beating the two-time reigning champion Heat 110-95 on Thursday.
But all the talk on Friday was about the failed air conditioning system, which caused temperatures to soar to more than 30C inside the AT&T Center.
That created huge difficulties for the players, especially James, who has had a career-long problem with staying hydrated in sweltering temperatures.
"It was extreme conditions. I never played an NBA game like that with the heat. I looked in stands and saw every last fan with a fan waving it, and I knew this was something different," James said.
"I sweat a lot... This used to happen to me a lot in high school. I (have) been tested for it."
James has taken some flack in social media circles over the incident.
Fans using the hashtag #Lebroning posted pictures of themselves on Twitter pretending to have leg cramps.
And American sports drink company Gatorade Co. mocked him on their twitter feed, though they later apologised
Spoelstra said James is one of those rare athletes who can push himself to Herculean heights.
But the flip side is that James has no off switch allowing him to dial it back when his body starts to fail him.
"Ninety-nine per cent of people have never pushed themselves to that level where the tank is empty and the body shuts down," Spoelstra said.
"In hindsight I could have rested him more. But how realistic is that in a finals environment?
"Last night was so extreme. He was burning through his fluids and calories at an extraordinary rate.
"It was like trying to play a NBA basketball game in a hot yoga environment."
