Tracey produced a personal best 1:58.99 to advance to the final as one of the fastest losers after finishing fourth in the third semi-final. Mary Moraa (1:58.48), Athing Mu (1:58.78) and Halimah Nakaayi (1:58.89) were the top three finishers in the race.
This continues an excellent week for Tracey. She also competed in the 1500m, running a national record 3:58.77 in the semi-finals.
Natoya Goule-Toppin competed in the second of three semi-finals but failed to advance after running 2:00.78 to finish third behind Great Britain’s Jemma Reekie (2:00.28) and the USA’s Raevyn Rogers (2:00.47).
The 30-year-old two-time Commonwealth champion took home the country’s first ever major championship medal in the event with a national record 8756 points.
Canada’s Pierce LePage and Damian Warner took gold and silver with 8909 points and 8804 points, respectively.
The 21-year-old, who produced a massive personal best 44.14 in the semi-finals on Tuesday, ran a measured first 300m before producing a magnificent final 100m to blaze past Great Britain’s Matthew Hudson-Smith who was second in 44.31. American Quincy Hall ran a personal best 44.37 to take bronze.
2011 World Champion Kirani James ran 44.52 for fifth while Sean Bailey ran 44.96 for sixth.
Watson’s gold medal is the second in the World Championships by a Jamaican with the first coming 40 years ago when Bert Cameron took gold in Helsinki.
Antonio Watson was first up and set the track ablaze with a massive personal best 44.13 to take semi-final one over the likes of South African world record holder Wayde Van Niekerk and American Vernon Norwood.
Norwood ran a personal best of his own with 44.26 for second while Van Niekerk ran 44.65 in third and Jereem Richards ran 44.76 in fourth.
Van Niekerk made it through to the final as one of the fastest losers while Richards was just beaten out Norway’s Havard Bentdal Ingvaldsen who ran 44.70 in heat two.
Great Britain’s Matthew Hudson Smith won the second semi-final in a personal best, British and European record 44.26 ahead of 2011 World Champion Kirani James who ran 44.58.
Unfortunately, reigning Olympic Champion Steven Gardiner looked set to book his spot in the final before pulling up injured while leading with about 100m to go in the third semi-final.
The race was eventually won by American Quincy Hall in 44.43 while Jamaica’s Sean Bailey also made it through to the final with 44.94.
