Lyles, Bol, Jacobs headline world relays with Olympic places up for grabs

Lyles added a third world gold in Budapest last year after anchoring the US team to victory in the 4x100m relay. He will be joined in the Caribbean by Olympic 200m silver medallist Kenny Bednarek and in-form Courtney Lindsey, while four women who helped USA to gold in the 4x100m in the Hungarian capital will also be present: Gabby Thomas, Tamari Davis, Tamara Clark and Melissa Jefferson. Lyles posted a wind-aided 9.96sec 100m victory in Bermuda on Monday, Davis winning the women's short sprint in 11.04...