In the first ever mixed 4x400m relay final at a world championships, Wil London (Waco, Texas) made up a lot of ground on the lead leg to pass to Allyson Felix (Troy Michigan) with a good lead. Poland chose to run their two men first and moved ahead quickly, but the most decorated athlete in World Championships history had a superb carry to put Courtney Okolo (Dallas, Texas) in position. 
U.S. anchor Michael Cherry (Baton Rouge, Louisiana) ran down Poland’s Justyna Swiety-Ersetic within 120m and brought the baton home in a huge new world record of 3:09.34, knocking more than three seconds off the standard set by Team USATf in yesterday’s heats. With the win, Felix moved atop the all-time gold medal list in Worlds competition with 12, passing Usain Bolt.
