The World Athletics Relays, an event crowning champions in 4x100m and 4x400m events, airs live this Saturday and Sunday on Peacock and CNBC. Coverage begins each day at 7 a.m. ET from Guangzhou, China ...

The World Athletics Relays air live on Peacock this weekend. ... (a new event), plus World Championships qualifying rounds in the men's and women's 4x100m and 4x400m, plus the mixed 4x400m.