Topic summary
2019 IAAF World Relays
The 2019 IAAF World Relays was held in Yokohama, Japan from May 11 to May 12, 2019. Two new events were established for 2019, both mixed events: the 2 × 2 × 400 m relay and the shuttle hurdles relay. The first event replaced the 4 × 800 m relay that featured at previous events.