Paris Saint-Germain manager, Luis Enrique, has spoken out against the kick-off times at the Club World Cup.
Enrique warned that the conditions are not ideal for top-level football in US summer heat.
He was speaking after PSG hammered Atletico Madrid 4-0 in their first group game on Sunday.
Played at noon in Pasadena, Los Angeles, the match kicked off in searing conditions, with temperatures reaching nearly 40C under the sun and 60 humidity.
Enrique said: "The match was clearly influenced by the temperature.