Usain Bolt's glittering sprinting career ended on a somewhat sad note as he failed to finish in the men's 4x100m relay competition.
The Jamaican - widely considered the greatest sprinter of all time - was hoping for one last hurrah in London Saturday night, but it was not to be.
Bolt pulled up injured during his anchor leg as Jamaica failed to finish the race.
Great Britain took the gold medal with a world-leading time of 37.47. The British duo of Chijindu Ujah, Adam Gemili, Daniel Talbot and Nethaneel Mitchell-Blake combined to edge out the United States, who took silver in 37.52 - a season's best time.
Japan took third in 38.04, also a season's best for them.
All eyes were on Bolt, however, who was helped to his feet by his team-mates after the race before applauding the crowd.
While London 2017 did not go to plan for him, Bolt still signs off with 11 world championship golds and eight more in the Olympics. His reputation remains intact, even though he could not give fans in the London Stadium what they'd been hoping for.
Elsewhere, the women's 4x100m relay was won by Olympic champions United States in a world-leading time of 41.82.
Aaliyah Brown, Allyson Felix, Morolake Akinosun and Tori Bowie proved an unstoppable unit, though victory was only secured when 100m champ Bowie pulled away in the last 20m of the final leg.
The silver medal went to Great Britain with a time of 42.12, while Jamaica took the bronze in 42.19, a season's best time for them.
In the men's 5000m, pre-race favourite Mohamed Farah - who won the 10 000m earlier this week - was denied a fifth consecutive major championships distance double by Ethiopia's Muktar Edris.
Edris clinched the gold medal a time of 13:32.79, less than half a second faster than Farah, who crossed the line in 13:33.22.
American Paul Kipkemoi Chelimo was hot on Farah's heels to win bronze in 13:33.30.
Farah will switch his focus to marathons after his final track appearance at the 5,000m Diamond League final in Zurich later this month.
The women's 100m hurdles gold went to Sally Pearson in a time of 12.58.
The Australian was forced to miss last year's Olympics after tearing her hamstring in training, but was able to make up for it somewhat with her second world title.
The silver medal went to Dawn Harper Nelson with 12.63 - a season's best time for the American - while Germany's Pamela Dutkiewicz won bronze in 12.72.
Russian athlete Maria Lasitskene, competing as a neutral in London, won the women's high jump gold medal after her mark of 2.03 could not be bettered by any of the other competitors.
Yuliia Levchenko of Ukraine won silver with a personal best jump of 2.01, while Poland's Kamila Licwinko took the bronze with 1.99.
Olympic champion Ruth Beitia of Spain finished a disappointing 12th out of 12 competitors.
The men's javelin was won by Germany's Johannes Venter with a throw of 89.89.
Two Czech athletes won silver and bronze with a pair of season's best throws - Jakub Vadlejch (89.73) and Petr Frydrych (88.32).
Olympic champion Thomas Rohler could only manage fourth.
The men's decathlon competition came to a close with Frenchman Kevin Mayer comfortably claiming the gold medal.
Mayer, who also won the silver medal in Rio, was a cut above the rest this time around.
Kai Kazmirek of Germany won the silver and Damian Warner of Canada the bronze.