Adam Gemili booked his place in Thursday's 200m final, finishing third in his heat behind 100m gold and bronze medallists Usain Bolt (Jamaica) and Andre de Grasse (Canada).
Gemili's time of 20.08 seconds was one hundredth off his season's best and was enough to see him progress as one of the two fastest losers, with 100m silver medallist Justin Gatlin (USA) missing out.
And the Londoner hopes that the departure of some big names like Gatlin and 2012 silver medallist Yohan Blake will give him a good shot at a medal.
“I’m through and hopefully I can get myself in the mix because there were some big names that went out in that last semi-final," he said.
“It’s always open as long as you run your own race and that’s something I didn’t do there. I’m in a lot better shape than 20.08s, so I’m disappointed seeing that. But that’s a good thing, I suppose, not being satisfied with that. I probably won’t get the best lane in the final but I’ll make it work.”
Daniel Talbot set a new personal best in heat one, stopping the clock at 20.25s to finish third and occupy the fastest loser spot, but Gemili's faster heat saw both he and Turkey's Ramil Guliyev go through.
In the third heat, Nethaneel Mitchell-Blake also recorded 20.25s to finish fifth, ahead of Blake.
Five Brits contested finals in the evening session on Wednesday but weren't able to claim a medal, with Dina Asher-Smith's scoring a fifth-place finish in the women's 200m final.
Tiffany Porter and sister Cindy Ofili reached the final of the women's 100m hurdles, with Ofili finishing second in the last semi-final and Porter clinging on as one of the fastest losers from the first semi.
The USA took a clean sweep of the medals, with Ofili running a season's best 12.63, missing out on bronze by two hundredths of a second.
And in the women's long-jump final, Jazmin Sawyers finished eighth with a jump of 6.69m, 48cm down on winner Tiana Bartoletta (USA).
Fellow Brit Lorraine Ugen's jump of 6.58 was not enough to break the top eight after the first three jumps, meaning she was eliminated early.
"Jumping seven metres is the next thing," Sawyers said, looking to the future. "I wasn’t looking like that tonight, but I think I’m capable of it. "I’ve made quite big strides in the last couple of years and I’m gaining experience all the time. This has been something new and now I’m going to talk to my coach to see what [target] is next.”