Christian Taylor defended his Olympic triple jump title by once again holding off fellow American Will Claye at Rio 2016 on Tuesday, while Usain Bolt coasted into the semi-finals of the men's 200 metres.
Taylor beat Claye to gold in London four years ago and his first-round jump of 17.86m proved enough to top the podium for a second time.
The distance was a season's best for Taylor but did not trouble Jonathan Edwards' long-held world-record distance of 18.29 metres, which the 26-year-old had come within eight centimetres of at last year's World Championships.
Fresh from completing his treble of Olympic 100m triumphs on Sunday, Bolt barely broke into a sweat as he cruised into Wednesday's 200m semis, although it was Andre de Grasse who went fastest, crossing the line in 20.09 seconds.
Gold medallist in the 10,000m Almaz Ayana once again proved to be in a league of her own over 5000m as she finished 13 seconds clear of her nearest rival in the second heat.
Hellen Onsando Obiri, winner of the opening heat, was 15 seconds off Ayana's pace.
In the only other medal event of the early session at the Olympic Stadium, Sandra Perkovic retained the women's discus crown with her only legal throw.
Meanwhile, heptathlon champion Nafissatou Thiam has pulled out of the women's high jump.
Each of Taylor's three clean jumps would have been enough to clinch gold as he lived up to his billing as the odds-on favourite.
QUOTES OF THE DAY
"I hate mornings, so I'm happy to get this out of the way." - Bolt sees his 200m heat as a minor inconvenience.
"This morning when I woke up I was like, 'Today is going to be the best day of my life'." - Claye proposed to girlfriend Queen Harrison after winning silver in the men's triple jump.
"Melina Robert-Michon from France threw a new national record and is a silver medalist and is 37 years old. She's big motivation for me to keep 10 more years and I don't want to break up. I just want to continue and work like I did before." - 26-year-old Perkovic has no intention of slowing down after second Olympic title.
There will be three gold medals on offer at the Olympic Stadium in the second session of the day, with the race to succeed reigning 110m hurdles champion Aries Merritt - out of the Games after a kidney transplant - top of the bill.