Great Britain's Mo Farah took another step towards becoming the second man to win both the Olympic and World long-distance double after easing into the 5,000m final in Moscow.
Farah is seeking to emulate Ethiopian Kenenisa Bekele in Friday's final after he became just the seventh man to win the 5,000m and 10,000m titles at the Olympic Games last year in London.
The reigning 5,000m champion from the world championships in Daegu in 2011 set the pace for much of the early going, eventually easing down to qualify alongside training partner Galen Rupp.
After winning 10,000m gold on Saturday, Farah goes into the 15-man field as the outstanding favourite but will face competition from fastest qualifier Muktar Edris, Kenyan pair Isiah Koech and Edwin Soi as well as the experienced Bernard Lagat.
"You have to do the job without going crazy," Farah told BBC Sport.
"My body feels good, the team have been looking after me well and I'm recovering well. It would mean a lot to me to be double champion and hopefully I can make my country proud.
"I just wanted to do as little work as possible to be fresh in the legs, ready for the final and I did that.
"Galen and I looked across and with top five qualifying, which we were going to do, I said save as much energy as you can. I wanted to run comfortably and not sprint all out and tire myself out for the Friday."
After Christine Ohuruogu claimed Britain's second gold of the Championships on Monday, Katarina Johnson-Thompson could add to the medal haul in the heptathlon on Tuesday evening.
Despite Olympic champion Jessica Ennis being out with an ankle injury, GB could be set to continue their lengthy success in the competition ahead of the final 800m event.
Johnson-Thompson stands in fifth after six events, 42 points behind third place Dafne Schippers of the Netherlands after two personal bests in the long-jump and javelin and could snatch an unlikely medal in the final event of the competition.