Substitutes who watch from the locker room, abandoned practice sessions and sweat-soaked jerseys. A heat wave hitting a wide swath of the country is taking a toll on players at the FIFA Club World Cup .
The grueling conditions could also be a preview of what's to come next summer when the United States, Canada and Mexico host soccer's premier event, the 2026 World Cup.
"It's impossible, it's terribly hot. My toes were sore, even my toenails were hurting, I couldn't stop or start. In the end, it's incredible, but since it's the same for everyone, there's no excuse," Atletico's Marcos Llorente said following a match against Paris Saint-Germain.
A "heat dome" of high pressure has settled in over the central and eastern United States, sending temperatures soaring into the 90s in Fahrenheit and above in many areas.
That's rough on both Club World Cup players and fans, who can potentially experience dehydration and cramps, or more serious conditions like heat exhaustion and heat stroke .