A runner from Guinea-Bissau Braima Suncar Dabo assisted an Aruban athlete Jonathan Busby across the finish line during the 5,000m heats at the World Athletics Championships in Doha, www.sports.ru reports, referring to the NBC Sports twitter link.
Busby felt exhausted because of stuffiness shortly before the end of the qualifying race, and Dabo helped him across the finish line.
Spectators in the stands greeted the athletes with applause.
Selemon Barega from Ethiopia won the race (13 minutes 24.69 seconds).