Usain Bolt is the first person simultaneously to hold both the 100 meter dash world record and the 200 meter dash world record since the introduction of infrared speed trackers.
Usain Bolt . He is the first person to hold both the 100 metres and 200 metres world records since fully automatic time became mandatory . He is the most successful athlete of the World Championships and was the first athlete to win three titles in both the 100 m and 200 m at the competition .