Cordell Tinch capped a superb second season as a professional by winning 110 metres hurdles gold at the World Athletics Championships in 12.99 seconds.
The 25-year-old American, the world leader this year, stormed over the 10 hurdles and held off the fast finishers in the run-in to claim the title at his first global championships.
"When I crossed the finish line I felt relieved," the 25-year-old said.
"I came into this season with the goal of winning the world title. I wanted to be the best hurdler in the world.
"Being the only one to run sub-13 today makes me happy. I believed I was the best out there, so I didn't feel any pressure. People expected me to panic but I stayed focused."
Cordell Tinch justifies the hype with gold in the 110m hurdles final
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Orlando Bennett ran a personal best 13.08 to win silver, while his fellow Jamaican Tyler Mason took the bronze in 13.12, which matched his previous best time.
"I was really trying to beat Cordell, but that wasn't the case," said Bennett. "The race was just an adrenaline rush. I wanted to get through the hurdles and keep going."
Olympic gold medalist Grant Holloway's six-year reign as world champion ended earlier on Tuesday when the American finished sixth in his semi-final.
Canada's Ethan Katzberg claimed a third global hammer title in three years when he launched his second attempt a massive 84.70m for a championship record that made him the fifth-longest thrower in history.
The 23-year-old incredibly was over 81 metres with all six throws and finished with 83.73m for fun with the gold medal already assured.
Katzberg is now a double world champion either side of his Olympic triumph last year and his win made it a hammer double for Canada in Tokyo after Camryn Rogers completed the same global hat-trick on Monday.
Germany's Merlin Hummel took the silver after he hugely improved his personal best from 81.27m to 82.77m with his first throw. Hungary's Olympic silver medallist Bence Halasz added a third world bronze to his collection with 82.69m.
Hamish Kerr banished his world championship demons with a leap of 2.36 metres to win a dramatic high jump final and give New Zealand a second gold medal in Tokyo.
The 29-year-old, who failed to qualify for the final at the last two world championships, matched his personal best at the first attempt and tore off across the infield in celebration when Woo Sang-hyeok failed at the same height.
"I am stoked with the gold and stoked with the way I did it. That's something I am going to look back on," said Kerr.
"I had to fight for the gold. It was not an easy final for me. Many times I thought I wouldn't win. But being able to fight and not give up is important."
Woo, who was hoping to give South Korea their first ever outdoor world championship gold, finished second to add another silver medal to the one he won three years ago after clearing 2.34m at his third attempt.
Czech Jan Stefela took bronze on the countback over Ukraine's Oleh Doroshchuk after they both cleared the bar at 2.31m but failed all three attempts at 2.34m.