USA women win 4x400m Richards-Ross Splits 48.79 World Relays 2015

Jamaica beats USA and wins Women's 4x400m Relay Final - World Athletics Championships BEIJING 2015

FINAL 4x100mts IAAF WORLD RELAYS BAHAMAS 2015 USA WIN 37.38! USAIN BOLT JUSTIN GATLIN TYSON GAY

FINAL 4x100mts IAAF WORLD RELAYS BAHAMAS 2015 USA WIN 37.38! USAIN BOLT JUSTIN GATLIN TYSON GAY

Calabar Winning The 4x400m Final (3:09:97) - High Schools - Championship Of America - Penn Relays 2015

Calabar Winning Their 4x400m Heat (3:15:46 secs) - Penn Relays 2015

USA All-Star 4x400m Relay After 3:03.35 American Youth Record

Thailand overpowers hosts Vietnam by 008s to win Mixed Relay 4x400m Athletics SEA Games 2021

Asian Games 2018 4x400m Relay: India Women Win 5th Straight Gold

Trinidad and Tobago wins 4x400m Relay Men Final IAAF

India Beats Vietnam and Wins WOMEN'S 4X400m RELAY FINAL.

IAAF World Relays Bahamas 2014 - Mixed Zone 1 Lap Race USA Women Final Winner

Great Britain & NI win Women's 4x400m Relay in 3:34.36

GOLD! Indian women run to win in 4X400m relay at Asian Games

India Beats Vietnam and Wins WOMEN S 4X400m RELAY FINAL. 22nd ASIAN ATHLETICS CHAMPIONSHIPS-2017_360P

[Day 8] GREAT BRITAIN & N I wins / 4x400m Relay Men / Heat 1 / 29 Aug / IAAF World Champs 2015

WATCH | 4-Time USA Gold Medalist, Sanya Richards-Ross Talks Summer Olympics Representation

Michael Phelps brought down the curtain on his Olympic career when he helped the USA win 4x100m medley relay gold at the

USA Men Win Silver in 4x100 Relay

Men's 4x100 Metres Relay IAAF World Relays 2015 - Nassau, Bahamas - Final

Disassemble RELAY 5 Pin HRS4H-S See how Relays work from the inside

Men's 4x100 Metres Relay IAAF World Relays 2015 - Nassau, Bahamas - Final

Women's 4x200 Metres Relay IAAF World Relays 2015 - Nassau, Bahamas - Final

Tyrese Cooper Splits 45.7 In 4x400m At 2016 Flo Golden South

Brandon Miller Splits 47.47 On 4x400m Leg

2016 Sun Belt Conference Indoor Track & Field Championship Men's 4x400m Relay (2 heats)