| Event | Value | Date | Swimmer | Meet | |
|---|---|---|---|---|---|
Backstroke 50 m | 2227 | Aug 27, 2016 | Michael Andrew United States | 2016 ? Paris, France | |
Backstroke 100 m | 4892 | Dec 12, 2015 | Matt Grevers United States | 2015 Duel in the Pool Indianapolis, United States | |
Backstroke 200 m | 01:4668 | Dec 19, 2010 | Ryan Lochte United States | 2010 World Championships Dubai, United Arab Emirates |
Please visit this site for the official version of NR USA