sentences:  He beat Wallace Spearmon at the Golden Gala's 200 m race, breaking Michael Johnson's meet record.He also took to the national stage, winning the 100 m and finishing as the 200 m runner-up at the 2010 USA Outdoor Track and Field Championships.A week later, Dix beat Tyson Gay at the Prefontaine Classic for another meet record of 19.72 seconds.