Turning professional in 2005, he earned his first major championship title with a gold medal in the 200 meters at the World Athletics Final. Gay quickly ascended, becoming the US Outdoor Champion in the 100 meters in 2006. That year, he set personal bests of 19.70 seconds in the 200 meters at the IAAF Grand Prix in Lausanne and 9.88 seconds in the 100 meters, securing gold at the IAAF World Cup and clinching the World Athletics Final championship with a 19.68-second 200-meter performance. His career reached a pinnacle at the 2007 Osaka World Championships, achieving a historic triple gold medal sweep across the 100 meters, 200 meters, and 4 x 100-meter relay.
Gay secured the Diamond Race Trophy for the 100 meters at Memorial van Damme in 2010 and qualified for the 2012 Summer Olympics in the 100 meters with 9.86 seconds. Gay continued his competitive success, winning the 100 meters at the Prefontaine Classic in 2015 and contributing to a 4×100-meter relay victory at the World Relays in the Bahamas the same year. Leveraging his vast experience, Gay has since transitioned into a dedicated mentor, providing personalized coaching to aspiring athletes. Through the Tyson Gay Foundation, he actively inspires youth through sports, fostering a champion’s mindset among the next generation of competitors.