Norway's Karsten Warholm completed a perfect season by blazing to world championship gold in the men's 400m hurdles.
In the same race Abderrahman Samba finally gave the hosts something to cheer claiming a bronze and Qatar's first medal.
The silky smooth Warholm, the second fastest ever over the distance, did not come close to Kevin Young's world record that many thought might fall but his time of 47.42 seconds was good enough to ensure a successful defence of his title.
The Norwegian's great rival American Rai Benjamin took silver in 47.66 while Samba delighted the home fans by claiming the bronze.
For the final event of the night the athletes were introduced with a spectacular light show worthy of a race expected to produce fireworks.
With three of the four quickest men ever in the event on the starting blocks, the 400m hurdles was circled early as the marquee event of the world championships.
The race was expected to come down to a duel between the Norwegian and the American who pushed each other to career best times in Zurich in August and it unfolded as predicted.
Ireland’s Thomas Barr made the semi-finals in this event, but missed out on a place in the final.
Ugandan Halimah Nakaayi pulled off an upset to win the women's 800 metres title favourite Ajee Wilson was left with another bronze as she ran out of steam with 100 metres left.
Wilson, hoping to become the first American to win the world title over the distance, led for most of the race but was overtaken by Nakaayi down the final straight as the Ugandan won in a national record of one minute 58.04 seconds.
Raevyn Rogers, another American, also sped past to take silver, leaving Wilson with the bronze she also won in London two years ago.
The Khalifa stadium was around half full for the race, providing a much-improved atmosphere compared to Sunday when it was virtually empty.
South Africa's Caster Semenya, the titleholder and three-times champion, did not take part due to global athletics' governing body the IAAF's recently-introduced testosterone regulations.
Maria Lasitskene became the first woman to win three world high jump title, gracefully clearing 2.04 metres to bring Russia's neutral athletes a second gold in two days.
Dominating the competition from the start, the 26-year-old continued to raise the bar after having secured gold in an attempt to achieve a personal best of 2.08m.
Although Lasitskene missed out on that mark with three failed attempts, she again demonstrated her absolute dominance of her discipline by clearing 2.04m at her first attempt.
Like the other Russians competing in Doha, Lasitskene was barred from celebrating her victory with a Russian flag and will not hear her country's anthem when she steps onto the podium.
"It's a shame," said Lasitskene, who has openly criticised Russia's suspended athletics federation. "It's unpleasant. You want to run with your flag."
Kenya's Beatrice Chepkoech stormed away from the field to win the 3,000 metres women's steeplechase gold medal at the world athletics championships on Monday, making amends for a mistake that cost her a place on the podium two years ago.
The world record holder made sure she left herself plenty of room for any possible errors in Doha as she stormed to a 20m lead after the opening lap and then kept the chasing pack at bay, powering home in a time of eight minutes, 57.84 seconds.
The diminutive Kenyan crossed a commanding five seconds clear of 2017 champion Emma Coburn. The American had to settle for silver while Germany's Gesa Felicitas Krause took the bronze for a second time.
