Ukrainian high jumper Yaroslava Mahuchikh won a gold medal to bring an emotional close to the track and field world championships. The very last person competing in the final event of the nine-day meet, Mahuchikh cleared 2.01 meters to win her first major outdoor title and set herself up as a favorite at the Olympics next year. Her evening came to a close moments after Femke Bol of the Netherlands, whose fall cost her team a medal in the mixed 4x400 relay on opening night, made up some 20 meters down the homestretch to win the women’s version of the race.