DOHA: Olympic sprinter Allyson Felix has smashed a world record held by gold medal-winning track star Usain Bolt, and she did it just 10 months after giving birth to a girl. Felix won her team a gold medal in the 4 x 400 m mixed relay of the ongoing World Athletics Championships in Doha. With this gold, she has a total of 12 gold in the World Championship, which is one more than Bolt. Bolt last landed this championship in 2017. Wilbert London, Courtney Okolo and Michael Carrie were in the race with Felix in the American team. This team won the gold medal of this event by taking a time of three minutes 9.34 seconds. Which is also the world record of this event. In this event, the Indian team was ranked seventh. Felix has won 12 gold medals in 200 meters, 400 meters, four times 100 meters, four times 400 meters and mixed four times 400 meters relay at the World Championships. Felix became the mother of a daughter from Caesarean on November 28, 2018, about 10 months ago. She then returned to the field in July 2019. Also Read: Ind vs SA: Mayank Agarwal hits a double century, sets this record against South Africa World Championship: Annu Rani created history in javelin throw final Hockey: India registers fourth consecutive victory by defeating world champion Belgium Ind vs SA: Rohit-Mayank achieve this feat after thirteen years