SAINT-DENIS, France — The ear-splitting roars raining down on the track and field stars in the Stade de France felt like eight years of pent-up energy flowing out at once.
They were for distance runner Joshua Cheptegei, who stamped his mark on a masterpiece of a 10,000-meter race to set an Olympic record and win a gold medal.
They were for Sha'Carri Richardson, who opened the meet in the afternoon Friday with a first-round 100-meter sprint that kept her own gold-medal dreams in tact.
They were for decathletes, who were showered throughout the afternoon and into the night as they worked their way through their first five events, garnering a show of support that's "not too typical for decathlon,'' Canada's defending champion Damian Warner said.
They were even for swimming.
The start of one decathlon heat was delayed about five minutes while the public address announcer begged for quiet and fans waving the French tricolor chanted and cheered for Léon Marchand's latest gold medal at the pool.
Cheptegei, who won in an Olympic-record time of 26 minutes, 43.14 seconds, loved every minute of it.
''It's the most rewarding that I am winning today in Paris, the most amazing crowd,'' he said. "The crowd was wild. And I knew that when I was going to the front, at the last two laps, I knew that this was going to be amazing for me.''