American Jeneba Tarmoh defeated compatriot and Olympic champion Allyson Felix by the narrowest of margins on Sunday after both athletes clocked the same time over 200metres at the Birmingham Diamond League meeting.
Tarmoh, a member of the Olympic gold medal winning 4x100 metres relay team at the 2012 London Olympics, was eventually awarded first place ahead of Felix and both given times of 22.29 seconds.
British teenager Dina Asher-Smith finished third in a personal best one-hundredth of a second behind.
The results:
Men: 100m: 1. Marvin Bracy (U.S.) 9.93, 2. Adam Gemili (GBr) 9.97, 3. Mike Rodgers (U.S.) 9.97; 300m: 1. Wayde van Niekerk (SA) 31.63, 2. Chris Brown (Bah) 31.99, 3. Delano Williams (GBr) 32.14; 800m: 1. Nijel Amos (Bot) 1:46.77, 2. Adam Kszczot (Pol) 1:47.03, 3. Marcin Lewandowski (Pol) 1:47.45; 1500m: 1. James Kiplagat Magut (Ken) 3:37.61, 2. Hillary Cheruiyot Ngetich (Ken) 3:38.42, 3. Vincent Kibet (Ken) 3:38.60; 5000m: 1. Thomas Pkemei Longosiwa (Ken) 13:07.26 2. Isiah Kiplangat Koech (Ken) 13:11.22, 3. Stephen Mokoka (SA) 13:20.22.
Long jump : 1. Greg Rutherford (GBr) 8.35, 2. Mike Hartfield (U.S.) 8.23, 3. Dan Bramble (GBr) 8.17; Triple jump : 1. Christian Taylor (U.S.) 17.40, 2. Benjamin Compaore (France) 17.01, 3. Tosin Oke (Nigeria) 16.71; Javelin: 1. Julius Yego (Ken) 91.39, 2. Vitezslav Vesely (Cze) 88.18, 3. Keshorn Walcott (T&T) 86.43.
Women: 200m: 1. Jeneba Tarmoh (U.S.) 22.29, 2. Allyson Felix (U.S.) 22.29, 3. Dina Asher-Smith (GBr) 22.30; 400m: 1. Stephanie McPherson (Jam) 52.14, 2. Geisa Aparecida Coutinho (Bra) 52.59, 3. Anyika Onuora (GBr) 52.75; 800m: 1. Eunice Jepkoech Sum (Ken) 1:59.85, 2. Laura Muir (GBr) 2:00.42, 3. Joanna Jozwik (Pol) 2:00.74; 1500m: 1. Sifan Hassan (Ned) 4:00.30, 2. Abeba Aregawi (Swe) 4:01.97, 3. Laura Weightman (GBr) 4:06.42; 3000m Steeplechase: 1. Virginia Nyambura (Ken) 9:24.01, 2. Hyvin Kiyeng Jepkemoi (Ken) 9:25.20, 3. Lydia Chepkurui (Ken) 9:26.54.
400m hurdles: 1. Kaliese Spencer (Jam ) 54.45, 2. Cassandra Tate (U.S.) 54.73, 3. Zuzana Hejnova (Cze) 55.00; High jump: 1. Kamila Licwinko (Pol ) 1.97, 2. Justyna Kasprzycka (Pol) 1.94, 3. Mariya Kuchina (Rus) 1.94.
Pole vault: 1. Fabiana Murer (Bra) 4.72, 2. Mary Saxer (U.S.) 4.62, 2. Anzhelika Sidorova (Russia) 4.62; Shot put: 1. Christina Schwanitz (Ger) 19.68, 2. Cleopatra Borel (T&T) 18.80, 3. Tia Brooks (U.S.) 18.67; Discus: 1. Sandra Perkovic (Cro) 69.23 2. Dani Samuels (Aus) 64.89, 3. Melina Robert-Michon (Fra) 63.23.